Dipentaerythritol Pentaacrylate Research Articles

In situ construction of fluorine-containing modified gel polymer electrolyte with high interfacial stability for high-rate lithium metal battery

Gel polymer electrolytes (GPEs) play a crucial role in promoting the development of lithium metal batteries, as they combine the high ionic conductivity of liquid electrolytes with the enhanced safety provided by solid electrolytes. However, traditional polymer electrolytes are typically poured using non-in-situ methods, which results in poor electrode-electrolyte contact and compromises their performance. In this paper, in situ thermal polymerization is utilized to incorporate di-pentaerythritol pentaacrylate (DPPA) and 3,3,4,4,5,5,6,6,7,7,8,8-tridecafluorooctyl acrylate (TFOA) into PAN spinning porous membranes. Application of TFOA reduces the crystallinity of GPEs and thus enhancing the Li+ transport capability, which enables the newly constructed GPEs to exhibit an ionic conductivity of 2.52 × 10−3 S cm−1 and a lithium-ion transport number of 0.61 at 30 °C. Simultaneously, fluoro-containing groups actively contribute to the formation of a negative solid electrolyte interphase (SEI) film full of LiF, ensuring the stable operation of Li symmetrical batteries for over 2000 h at a current density of 0.40 mA cm−2. The capacity retention rate of lithium metal batteries (LMBs) with commercial NCM811 cathodes reaches 88.2% after 300 cycles. We firmly believe that our newly designed gel polymer electrolytes (GPEs) can offer a viable solution for high-voltage and high-rate LMBs.

Fast fabrication of micron-sized Janus particles with controlled morphology via seed-swelling photoinitiated polymerization and their application in Cu (II) ion removal

At present, most of Janus particle with different shapes were synthesized via seeded emulsion thermal-initiated polymerization. Herein, a novel and simple strategy of seed-swelling photoinitiated polymerization was proposed to fabricate Janus particles, in which noncrosslinked polystyrene seed was swelled via absorbing an oil phase consisting of glycidyl methacrylate (GMA) as functional monomer, dipentaerythritol pentaacrylate (DPEPA) as crosslinker and different organic solvents. Several parameters such as molar ratio of monomer and crosslinker, irradiation time of UV light, the types of porogenic reagents and the composition of aqueous phase were investigated. Numerous liquid droplets merged into multiple protrusions, and further immobilized onto the surface of seed particle. Subsequently, half raspberry-like particle was finally generated with low molar ratio of monomer and crosslinker, while both dumbbell-like and egg-like Janus particles were acquired in higher molar ratio of monomer and crosslinker. These Janus particles were synthesized via “green” process owning to fast and simple characters. After modification via surface-initiated atom transfer radical polymerization (SI-ATRP) and amination, the as-synthesized Janus@polyAN-TEPA was utilized in the adsorption of Cu (Ⅱ) ion and the maximum adsorption reached 132 mg g−1. As a result, the Janus particles demonstrated excellent capacity on absorption of Cu (Ⅱ) ion, and it is promising to utilize the Janus particle in the fields of separation and enrichment.

4D Ultra‐High‐Density Long Data Storage Supported by a Solid‐State Optically Active Polymeric Material with High Thermal Stability

AbstractThe big data era has presented major challenges for data centers worldwide in information preservation aspects, such as storage capacity and long‐term sustainability. Here, a newly synthesized optically active polymeric material based on a highly thermally stable penta‐functional monomer dipentaerythritol pentaacrylate is reported. This material supports ultra‐high storage density with century‐long data lifetime utilizing the galvo‐dithered direct laser writing nanofabrication technique. Eighty layers of bit arrays and 16 grayscale‐level coding examples are demonstrated to confirm the feasibility of the 4D data storage with a data density reaching 10 terabytes per digital video disc. With the much‐improved thermal stability (the data degradation point reaches beyond 600 K) than average plastic materials, such as polymethylmethacrylate, this new polymeric material allows a data lifetime of nearly 250 years at room temperature (300 K), as confirmed by the accelerated aging test. This material offers a suitable storage medium solution for next generation optical data storage centers.

Surface modification of bundle-type polyamide fiber nonwoven with collagen to improve its hydrophilicity

In this work, surface modification is employed to improve the functionality of bundle-type polyamide fiber nonwoven (PAFN) by a simple method. Firstly, PAFN was treated with formaldehyde to get hydroxylated PAFN (PAFN-OH) with N-hydroxymethyl structure, and then PAFN-OH was modified by using (3-aminopropyl) trimethoxysilane (APS) to prepare silanized PAFN (PAFN-NH2). Secondly, ester-functionalized PAFN (PAFN-COO) was prepared by Michael 1,4 conjugate addition of PAFN-NH2 and dipentaerythritol pentaacrylate (5Acl). Finally, PAFN-COO was modified with collagen to evaluate the hydrophilicity of the functionalized PAFN (PAFN-g). The scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) spectra provided evidence for the modification from PAFN to PAFN-g. Moreover, the atomic force microscopy (AFM) shows the change in surface roughness of PAFN and modified PAFN. The water vapor transmission rate was increased 137.4% and the water contact angles decreased from 124.2° to 68.3° by comparing PAFN with PAFN-g. This indicated that the hydrophilicity of PAFN modified by collagen was improved significantly.

High-performance thermosets with heat resistant properties derived from methacrylated isosorbide and epoxy-based vinyl ester

Styrene (ST) is a common volatile petroleum-based diluent in epoxy-based vinyl ester (VE) resin system. In recent years, a number of renewable molecules, such as eugenol, have been methacrylated and products behaved lower volatility property than ST. However, these renewable resin systems exhibited decreased thermal performance, especially glass transition temperature (Tg). Therefore, these resin systems cannot be used in hash environment. In our work, we used isosorbide to react with methacrylic anhydride and the synthesized monomer was mixed with VE resin to produce new bio-based resin system-MIVE. Volatility, viscosity and thermomechanical properties of MIVE and VE/ST resin were examined. The results indicated that MIVE had excellent low volatility property and Tg of MIVE can achieve 210 °C. Furthermore, we discussed the approach to improve heat resistant property of resin system. Acrylates with vinyl groups, including hydroxyethyl methacrylate (HEMA), pentaerythritol triacrylate (PETA) and dipentaerythritol pentaacrylate (DPHA), was grafted to MIVE respectively. Dynamic thermomechanical analysis (DMA), heat distortion temperature (HDT) and thermogravimetric (TGA) tests were used to measure thermal performance of grafted resin systems. The results showed Tg of grafted MIVE ranged from 210 to 240 °C, HDT ranged from 160 to 230 °C and initial decomposition temperature (IDT) (5% weight loss) were over 400 °C. Overall, studies showed that grafting acrylates with vinyl groups to VE was an effective way to improve the heat resistant properties of bio-based resin systems.

Catalyst-Free and Rapid Chemical Approach for in Situ Growth of "Chemically Reactive" and Porous Polymeric Coating.

Design of "chemically reactive" coating with a tailored topography is a simple basis for optimizing various physical and chemical parameters, which is essential for achieving different biomimicked liquid wettability. In general, the essential topography and appropriate chemistry in the superhydrophobic coating is optimized following various top-down and bottom-up approaches, where various hydrophilic building blocks are associated using electrostatic interaction, hydrogen bonding, and other weak bonding (e.g., metal-thiol etc.), for both developing the desired hierarchical features and optimizing the appropriate chemistry on top of this featured interface. Such designs are inappropriate to sustain practically relentlessly harsh settings. So, further development for the synthesis of a durable and substrate-independent superhydrophobic coating is essential for various prospective applications in "real-world" scenarios. However, the design of highly abrasion-tolerant and "absolutely" substrate-independent artificial superhydrophobicity following a simple and scalable synthesis procedure is rare in literature. In this current work, a catalyst-free and facile chemical approach is adopted for an in situ and rapid deposition of a "chemically reactive" nanocomplex for decorating a wide range of substrates, including water-soluble, water-sensitive, highly flexible, rigid, and fibrous substrates with a highly tolerant biomimicked superhydrophobicity property. Branched poly(ethylenimine) (BPEI) and dipentaerythritol pentaacrylate (5Acl) mutually react through 1,4-conjugate addition reaction, and a hierarchically featured "chemically reactive" dip-coating is synthesized by the appropriate selection of the alcoholic solvent that is 1-heptanol. Furthermore, the choice of small alkylamines for post-covalent modifications of the "chemically reactive" dip-coating provided superhydrophobicity with a tailored water adhesion. A gradual increase in both roll-off angles, and the contact angle hysteresis (from 5° to 30°) was noted with a decrease in the hydrocarbon tail of selected alkylamines. The synthesized biomimicked interfaces are capable of performing under various practically relevant, severe physical and chemical challenges including bending, creasing, twisting, different physical abrasions (i.e., adhesive tape peeling test, abrasive sand paper test, etc.), high compressive strain, highly acidic and alkaline aqueous phases, artificial sea water, river water, etc. Moreover, this current approach was extended in developing various relevant functional materials, including superhydrophilic/superhydrophobic physical patterns on flexible papers and highly compressible super-oil-absorbent, etc.

Influence of different functionality degree grafting monomers on polypropylene melt radical branching reaction and their structure

Long‐chain–branched polypropylene (LCBPP) is one of polypropylenes (PPs) with high melt strength and good melt elasticity. Recently, due to its outstanding properties, LCBPP have been attracted increasingly attention in the field of development and characterization by the researchers all over the world. In this study, LCBPP was prepared by the melt radical branching reaction in a torque rheometer. The influences of various acrylate monomers with different functionality degrees on the structure and melt performance of PP products were investigated. The results indicated that grafting monomers with different functionality degrees made diverse influences on the branching density and branching chain length of branching PP products. With the increase of the functionality degree of grafting monomers, the branching level of PP products increased gradually and the “multiplicity” of branches became increasingly obvious. Besides, a higher reactivity of pentaerythritol triacrylate with hydroxyl than the similar molecular structured pentaerythritol tetraacrylate was confirmed. Furthermore, due to the high reactivity of dipentaerythritol penta(hexa)acrylate, branching and crosslinking reaction occurred simultaneously during the reaction process. As a result, the gel content increased and finally formed highly star branching structures with a shape of “dense and short.”

Facile Synthesis of Tunable and Durable Bulk Superhydrophobic Material from Amine “Reactive” Polymeric Gel

Materials with extremes of water wettability are of potential interest in various fundamental and applied contexts. However, often, poor chemical and physical durabitity of conventional thin special wettable materials stands in the way of prospective applications of this property at practical settings. A chemically “reactive” polymeric gel material is introduced here, and advantage is taken of the robust and facile 1,4-Michael addition reaction between acrylate and primary amine groups to develop a chemically cross-linked and bulk (including interior and surface) superhydrophobic material. A mixture of dipentaerythritol pentaacrylate and branched poly(ethylenimine) (BPEI) can rapidly form a self-standing gel network. On removal of solvent molecules, the synthesized gel network provides a highly porous and reactive polymeric matrix that can be further modified with a variety of small molecules to tailor the liquid water wettability on the synthesized material. This approach provides a facile and rapid proc...

Surface properties of poly(lactic acid)/polyacrylate semi-interpenetrating networks – Effect of UVC radiation

Poly(lactic acid), PLA, was blended with multifunctional acrylate monomer (dipentaerythritol pentaacrylate) in various weight ratios (1:1 and 9:1). The reaction of photopolymerization of the acrylate monomer in poly(lactic acid) matrix was conducted to obtain semi-interpenetrating networks in the form of films dedicated for use in the packaging industry. Next, the PLA/polyacrylate films were exposed to UVC radiation in order to examine their photostability under the influence of high energy radiation, which can be used as sterilizing factor. In these studies, the following methods have been applied: contact angle measurements, X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). These methods made it possible to determine the influence of sample composition on the surface properties and photochemical resistance. It was found that PLA was the most susceptible to UVC-irradiation among the studied samples. In PLA/polyacrylate films UV light induced a slight increase in surface roughness and only negligible changes in surface polarity and chemical composition. The mechanism of photodegradation in the tested specimens was also discussed.

Curing Behavior Study of UV-Curable Coatings Containing Nanosilica and Different Multifunctional Monomers via Depth Profiling Assessment

This study was done to assess the curing behavior of UV-curable coatings containing the multifunctional acrylate monomers, 1,6-hexanediol diacrylate (HDDA), trimethylolpropane triacrylate (TMPTA), and dipentaerythritol pentaacrylate (DiPEPA). Functionalized nanosilica was used for nano-based coating preparations. A microtome was used to cut each coating into three sections in order to study depth profiles of the coatings. FTIR and HPLC analyses were applied to determine degrees of double-bond conversion and quantities of residual monomer. The results showed that the biggest monomer in terms of size, DiPEPA, mainly remained at the surface of the microtomed sections. However, the bottom of microtomed sections had residual HDDA and TMPTA monomers. Similar behavior was observed in the nano-based coatings, and the degree of conversion at the bottom of the microtomed sections had noticeably increased.

Crosslinked blends of poly(lactic acid) and polyacrylates: AFM, DSC and XRD studies

The blends based on poly(lactic acid), (PLA) and polyacrylates (1:1 weight ratio) have been prepared by photopolymerization of three different multifunctional acrylate monomers (pentaerythritol triacrylate, pentaerythritol tetraacrylate and dipentaerythritol pentaacrylate) in matrix of linear PLA. The structure of these systems has been studied by Atomic Force Microscopy (AFM), Differential Scanning Calorimetry (DSC) and X-ray Diffraction (XRD). It was found that the blends are highly crosslinked, rough, heterogeneous and some of them – semicrystalline. The effect of UV-irradiation on surface morphology of obtained mixtures was studied. The viscometry has been applied for measurements of changes of PLA molecular weight resulting of photodegradation. It was shown that blends are much more photostable than pure PLA.

Fabrication and characterization of macroporous TiO 2 films by photo polymerization-induced phase separation method

Macroporous TiO 2 films have been fabricated by a photo polymerization-induced phase separation method without any surfactant and colloidal templates. The gel TiO 2 films deposited from the precursor solution containing photo monomer dipentaerythritol pentaacrylate were irradiated by the ultraviolet light. After that, the films were heat-treated at 600 °C for 10 min. The scanning electron microscopy results showed that TiO 2 films with macroporous structures could be obtained. The macroporous structure could be controlled by changing the reaction parameters. The as-prepared TiO 2 films exhibited much higher photocatalytic activity for the decomposition of methylene blue dye than that of the dense TiO 2 film.

Integrated Two-Photon Polymerization With Nanoimprinting for Direct Digital Nanomanufacturing

In this work, we demonstrate the plausibility of integrating two-photon polymerization (TPP) with nanoimprinting for direct, digital nanomanufacturing. TPP offers manufacturing of nanomolds at a low cost, while the nanoimprinting process using the nanomolds enables massively parallel printing of nanostructures. A Ti:sapphire femtosecond laser (800 nm wavelength, 100 fs pulse width, at a repetition rate of 80 MHz) was used to induce TPP in dipentaerythritol pentaacrylate to fabricate the nanoimprinting mold with 400 nm wide line array on a glass substrate. The mold surface was silanized by tridecafuoro-1,1,2,2-tetrahydrooctyl-1 trichlorosilane to facilitate the detachment of the mold from the imprinted material. This mold was then used to imprint poly(ethylene glycol) diacrylate (PEGDA). PEGDA is an important biomaterial for many applications such as tissue scaffolds for cell growth. A spectrophotometer and a scanning electron microscope were used to characterize the materials and nanostructures.

Effect of crosslinker multiplicity on the gel point in ATRP

AbstractThe experimental gelation was studied in atom transfer radical polymerization (ATRP) of methyl acrylate (MA) with various branching reagents that structurally differ by the number of vinyl groups (multiplicity). MA was copolymerized with branching reagents containing 2, 3, 4, 5, or 6 acrylate moieties per molecule, respectively. Reactions with a constant concentration of branching vinyl groups (the same molar ratio of [Vinylbranch]0/[Initiator]0) revealed a different gelation behavior when ethylene glycol diacrylate (2A) and trimethylolpropane triacrylate (3A) were used as crosslinkers, whereas the reactions using pentaerythritol tetraacrylate (4A) showed similar gelation behavior as compared to reactions using 3A. Additional reactions with dipentaerythritol pentaacrylate (5A) and hexafunctional acrylate crosslinkers (6A) revealed the presence of a concentration‐dependant gelation behavior. On the other hand, in reactions with the same molar concentration of various crosslinkers, gelation occurred at progressively lower MA conversions for reactions with an increasing number of vinyl groups per crosslinker. In addition, the number of unreacted pendant vinyl groups in the sols was compared for reactions with different multiplicity of the crosslinker and various ratios of [Vinylbranch]0/[Initiator]0. Finally, a linear oligomeric crosslinker containing multiple branching vinyl groups along the side chain was used as the branching reagent for gelation. The gelation behavior during the ATRP of MA with the linear crosslinker was different as compared to the use of the aforementioned crosslinkers with a star‐like architecture. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 2016–2023, 2010

Surfactant-Free Synthesis of Macroporous TiO2 Films by a Photopolymerization-Induced Phase-Separation Method

TiO2 films with controlled macroporous structures have been prepared from the precursor solution containing photomonomer dipentaerythritol pentaacrylate by a photopolymerization-induced phase-separation method (PIPS) in the absence of any surfactant and colloidal templates. The gel TiO2 film deposited from the precursor solution by dip-coating was irradiated with the ultraviolet light for some time. During the irradiation process, the polymerization of the photomonomer was induced, which resulted in the phase-separation in the film system. At the end of the polymerization reaction, two phases existed in the film, one was the emerging polymer rich phase, and another was the residual monomer-TiO2 oligomer-rich phase. After heat-treatment at 600 °C, the entire polymer decomposed and a well-defined interconnected macroporous TiO2 films could be obtained. X-ray diffraction, scanning electron microscopy, atomic force microscopy, thermogravimetric, and differential thermal analysis were used to characterize the macroporous TiO2 films. The results showed that the macroporous texture could be tuned by changing the composition of the precursor solution and the type of the reactive monomer. Polyvinylpyrrolidone was introduced into the system to slow the solvent evaporation. Highly macroporous TiO2 films prepared by the PIPS method exhibited much higher photocatalytic activity for the decomposition of methylene blue dye than the dense TiO2 film.

Growing “Nanofruit” Textures on Photo-Crosslinked SU-8 Surfaces through Layer-by-Layer Grafting of Hyperbranched Poly(Ethyleneimine)

We report the growth of hierarchical nanostructures on a photo-crosslinked SU-8 surface through alternating layer-by-layer Michael addition reactions between poly(ethyleneimine) (PEI) and dipentaerythritol pentaacrylate (SR399) to generate grafted hyperbranched poly(ester amines) (HPEA). Initial surface treatment with acryloyl chloride (AC) in toluene partially swelled the polymer network, resulting in the formation of “nano-cranberry” domes (∼100 nm in diameter), whose size and density could be varied by the choice of solvent, concentration, and reaction time of acryloyl chloride. The subsequent layer-by-layer grafting of hyperbranched PEI led to the formation of surfaces evocative of “nano-strawberries”, “nano-raspberries” and “nano-pineapples”, each of which consisted of ∼16−21 nm “nanoseeds” grown on top of and between the nanodomes. The complexity and coverage of the seeds can be manipulated by the generation and molecular weight of PEI grafts. In contrast, when the cross-linked SU-8 surface was init...

PREPARATION OF SUPER-HYDROPHOBIC SURFACES BY USING ELASTOMER TEMPLATES AND UV-CURABLE RESIN

Super-hydrophobic surfaces have attracted great research interest due to their novel performance as self-cleaning,anti-fog,and anti-oxidation.In this work,a new approach,based on elastomeric templates and UV-curable resins,has been developed to prepare super-hydrophobic surfaces.Poly(dimethylsiloxane) (PDMS,Sylgard 184) was purchased from Dow Corning and used to replicate lotus-leaf surfaces.In the replication step,PDMS blocks were prepared through replica molding against lotus-leaf surfaces.PDMS prepolymer was prepared by mixing the elastomer base and curing agent in a ratio of 10∶1. After 20 min,the PDMS prepolymer was poured into molds within fresh lotus-leaf surfaces as masters.Then the prepolymer was cured in 40℃ oven for 4 h.After curing and peeling off,the PDMS blocks with negative lotus-leaf surfaces' structures were obtained.Microscope observation indicates that the PDMS blocks' surfaces were featured with hollow cavities of 7～12 microns in diameter.The PDMS blocks could be used as stamps in the following curing step of ultraviolet (UV)-curable prepolymers,which consist of oligomer,cross-linking agent,reactive monomer,and photo-initiator.In the experiment,isobornyl acrylate,siliconized urethane acrylate,benzoin dimethyl ether and dipentaerythritol pentaacrylate were used as monomer,oligomer,photoinitiator and crosslinking agent,respectively.In a typical process,UV-curable prepolymer was prepared by mixing monomer,oligomer,photoinitiator and crosslinking agent in a ratio of 10∶68∶2∶20. Then the prepolymer was put into a 0.085 MPa vacuum oven to remove air bubble.The prepolymer was spread on substrates (silicon wafer or glass slide),pressed by the PDMS stamp with replicated lotus-leaf surface.Finally,the UV-curable prepolymer covered with the PDMS stamp was exposed to UV-light (500 μW/cm~2).After curing for 15 min,the PDMS stamp was peeled off,and the cured sample was store in 40℃ oven for 5 h before further experiments.Measured by scanning electron microscopy (SEM,Hitachi S-4500),a large amount of papillary microstructures with an average diameter of about 7～10 microns and average height of 10～18 microns could be seen on the surfaces.These papillary microstructures are replicas of the surface patterns of the lotus leaves.The obtained surfaces had water contact angles larger than 150° and small sliding angles,exhibiting fascinating super-hydrophobicity like lotus-leaf surfaces.Obviously,the replicated papillary microstructures played important role in the increase of surface hydrophobicity from about 105° (smooth film surface) to 157°.This result can be explained with the Wenzel theory.Factors influencing the wettability of resulted surfaces,such as content of monomer,cross-linking agent,initiator and light irradiation time,were also studied in detail.Experiments showed that the surface contact angles increase with the content of photoinitiator before 0.7%,and decrease with the content of crosslinking agent when larger than 20%.A monomer content of about 10% and irradiation time longer than 10 min were also preferable for achieving high hydrophobicity.Combining the advantages of soft-lithographic and UV-curing techniques,this approach can be potentially applied in fabrication of large-area super-hydrophobic surfaces.

Networks of photocrosslinked poly(meth)acrylates in linear poly(vinyl chloride)

AbstractFive different multifunctional acrylic monomers (trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, and dipentaerythritol pentaacrylate) were photopolymerized alone or in a matrix of linear poly(vinyl chloride) (PVC) with 2,2‐dimethyl‐2‐hydroxyacetophenone as a photoinitiator. The course of photopolymerization was estimated with Fourier transform infrared spectroscopy. The amount of insoluble gel formed during photopolymerization was determined gravimetrically. The crosslinked polymerization of pure monomers was much faster than that in the presence of PVC. However, the efficiency of the reaction was higher when it was carried out in a PVC blend because of the higher mobility of the propagating macroradicals. The influence of the monomer structure and functionality on the polymerization course was examined. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 3725–3734, 2002

Adherence of “stuck” restorations to demineralized dentin following use of experimental primers

Purpose. This in vivo study histopathologically evaluated the biocompatibility of four self-conditioning dentinal primer formulas in four bonding systems and evaluated the pulpal responses of the self-conditioning dentinal bonding systems for Class V tooth preparations in primates. Material and methods. The basic formula consisted of proprietary carboxylic diacid monomer, dipentaerythritol pentaacrylate phosphoric acid ester, acetone, and ethanol that was used alone or mixed with other commercial priming agents. After application of primers, Prisma Universal Bond 3 was selected to restore the cavity preparations. Results. All systems were judged histopathologically biocompatible. “Stuck” restorations that were resistant to acid demineralization necessary for processing of histologic slides, occurred more frequently with intact smear layers and increasing use of dehydrating agents. Conclusions. Tests should be performed to determine whether “stuck” restorations in in vivo studies that maintain dentin-pulpal relationships can support in vitro shear bond strength tests.(J Prosthet Dent 1997;78:354-66.)

Correlation between the mechanical properties and the homogeneity of some photopolymerized acrylic/methacrylic networks1

Proton T 1ρ data obtained by CP/MAS solid-state 13 C NMR at 100.56 MHz for different polyacrylate networks were correlated with their mechanical properties in order to determine the best mixture in terms of stress-at-break (σ), Young's modulus of elasticity (Y), and homogeneity of the monomers that are forming the solid network. The mixtures were formed by the photopolymerization of 40% trimethylolpropane triacrylate (TMPTA), 40% dipentaerythritol pentaacrylate (DPHPA), and 20% of a monomer from a series of poly(ethylene glycol) and poly(ethylene) dimethacrylate. Proton T 1ρ 's in networks were not quite averaged to a single value by spin diffusion as in polymer blends, indicating extensive intermixing of TMPTA and DPHPA in forming the network, but with phase separation between the dimethacrylate homopolymer and the rest of the network that is dependent on the laser power. The stress-at-break and the Young's modulus of elasticity were determined for each of the mixtures at different values of the laser power used for the polymerization.