Isodecyl Acrylate Research Articles

Copolymer functional groups modulate extracellular trap accumulation and inflammatory markers in HL60 and murine neutrophils

Undesirable host responses to implants commonly lead to impaired device function. As the first immune cell to respond to inflammation, activated neutrophils release antimicrobials and neutrophil extracellular traps (NETs) that prime microenvironments for macrophages and other infiltrating cells. This research aims to understand how functional groups in copolymers of isodecyl acrylate (IDA) that are known to modulate healing in vivo, modulate neutrophil cells. Phorbol myristate acetate-activated HL60 cells and bone marrow-derived murine neutrophils (BMDN) were incubated with coatings of IDA copolymerized with, methacrylic acid (MAA films), methyl methacrylate (MM films), or MM functionalized with hexamethylenediamine (HMD films). Cells incubated on HMD films resulted in increased accumulation of NETs at the film’s surface in comparison to other copolymers because of increased adhesion of HL60 onto HMD films or increased rates of NETosis from BMDN. Overall, lower inflammation was observed with cells on MAA films. HL60 cells had no increase in classical inflammatory markers such as tumor necrosis factor alpha and intracellular adhesion molecule-1, whereas HL60 on HMD films had increases in these same markers. Taken together, these studies give important insights into how neutrophils interact differently with functionalized copolymers and the proteins that adsorb to them, with MAA (carboxyl groups) leading to behavior associated with lower inflammation and HMD (amine groups) with higher inflammation and accumulation of NETs.

Synthesis of linseed oil based biodegradable homo and copolymers: role as multifunctional greener additives in lube oil

Homopolymer of linseed oil and its four copolymers with styrene, 1-decene, isodecyl acrylate and octyl acrylate, respectively, have been synthesized in this present context. The prepared polymers are characterized by NMR and FTIR spectroscopy. The molecular weights have been measured by gel permeation chromatography. Their effectiveness as pour point depressant (PPD), viscosity index improver (VII) and their shear stability in terms of permanent shear stability index have been evaluated in lube oil. The copolymers acted as better PPDs than the homopolymer whereas the homopolymer of linseed oil excelled as VII. Further it was observed that all the prepared polymers were stable enough under severe mechanical shear.

Laser synthesis of selenium nanoparticles in liquid monomers

The paper presents the results of selenium nanoparticles synthesis in various liquid monomers by laser ablation. The following substances were selected as the condensation liquids for laser ablation: isodecyl acrylate (IDA, Isodecylacrylate, Aldrich), carboxyethyl acrylate (2Car, 2-carboxyethyl acrylate, Aldrich), ethylene glycol phenyl acrylate (Aldrich), ethylene glycol phenyl acrylate, an available blend of Ebecryl monomers (Cytec Industries Inc.), currently one of the possible components of modern lacquer coatings for nail plates. Thus, a method is proposed for simultaneous synthesis and incorporation of selenium nanoparticles into a polymer matrix. It is established by scanning microscopy method that the sizes of the obtained nanoparticles are from 50 to 200 nm. Infrared spectroscopy results of obtained colloidal solutions showed zero interactions of selenium nanoparticles with monomers. Stable colloidal solutions of selenium nanoparticles were obtained, and solid polymer films promising for biomedical applications were synthesized. The polymerization of colloidal solutions with added monomers and/or mixtures of oligomers was carried out using photo initiator of polymerization 2.2-dimethoxy-2-fenilatsetofenol, sensitive in the UV region (365 nm). The results of IR spectroscopy of the obtained colloidal solutions and polymer nanocomposites showed the absence of interactions of selenium nanoparticles with monomers and polymer matrices. Such nanocomposites could be perspective for biomedical applications, for example, as fungicidal coatings of different surfaces.

Polymer Composition Influence on Optical Properties of Laser-Generated Au Nanoparticles Based Nanocomposites

Au nanoparticles (AuNPs) stable colloid solution were prepared by laser ablation and fragmentation in liquid monomer isodecyl acrylate (IDA). Sizes of obtained nanoparticles were determined by scanning transmission electron microscopy (STEM) and were about 20 nm. Nanocomposites films were prepared from obtained stable colloid solution by UV-photocuring. To prepare solid polymer films different crosslinking diacrylates were used. Third-order nonlinear optical responses of prepared nanomaterials with different polymer matrix compositions were estimated by z-scan technique and compared.

Nonlinear absorption enhancement of AuNPs based polymer nanocomposites

Au nanoparticles (AuNPs) based polymer nanocomposites with high nonlinear absorption coefficient were synthesized by UV-photocuring. AuNPs were synthesized by laser ablation method in liquid monomer isodecyl acrylate (IDA). In this research, two colloids with 70 nm and 20 nm nanoparticles average sizes were studied. Size control was performed with SEM and STEM. Prepared nanomaterials exhibit strong third-order nonlinear optical responses under CW laser irradiation at 532 nm, which was estimated by using z-scan technique performed with open aperture. It was found experimentally that nonlinear absorption β is almost twice higher for nanocomposites with smaller AuNPs.

Polymer composition influence on optical properties of laser-generated Au nanoparticles based nanocomposites

AbstractAu nanoparticles (AuNPs) stable colloid solution were prepared by laser ablation and fragmentation in liquid monomer isodecyl acrylate (IDA). Sizes of obtained nanoparticles were determined by scanning transmission electron microscopy (STEM) and were about 20 nm. Nanocomposites films were prepared from obtained stable colloid solution by UV-photocuring. To prepare solid polymer films different crosslinking diacrylates were used. Third-order nonlinear optical responses of prepared nanomaterials with different polymer matrix compositions were estimated by z-scan technique and compared.

Surface energy-tunable iso decyl acrylate based molds for low pressure-nanoimprint lithography

We presented surface energy-tunable nanoscale molds for unconventional lithography. The mold is highly robust, transparent, has a minimized haze, does not contain additives, and is a non-fluorinated isodecyl acrylate and trimethylolpropane triacrylate based polymer. By changing the mixing ratio of the polymer components, the cross-linking density, mechanical modulus, and surface energy (crucial factors in low pressure ((1–2) × 105 N m−2) low pressure-nanoimprint lithography (LP-NIL)), can be controlled. To verify these properties of the molds, we also characterized the surface energy by measuring the contact angles and calculating the work of adhesion among the wafer, polymer film, and mold for successful demolding in nanoscale structures. Moreover, the molds showed high optical clarity and precisely tunable mechanical and surface properties, capable of replicating sub-100 nm patterns by thermal LP-NIL and UV-NIL.

Multifunctional greener additives for lubricating oil

In an anticipation to produce biodegradable additives with multifunctional performance for a cost‐effective lubricant composition, copolymers are synthesized by incorporating rice bran oil, peanut oil, β‐pinene in the backbone of isodecyl acrylate through microwave irradiation method using AIBN (azobisisobutyronitrile) as radical initiator. The prepared polymers are characterized by spectral techniques (IR, NMR) and SEC‐GPC analysis, thermal stability was determined by thermogravimetric analysis. Performance of the polymers as antiwear (AW), pour point depressant (PPD), viscosity modifier/viscosity index improver (VII) in different mineral base oils (SN1 and SN2) were done by standard ASTM methods. Biodegradability test of the polymers was carried out by disk diffusion (DD) and soil burial test methods. The copolymers of rice bran oil showed better viscosity index values and AW property, whereas the copolymers of peanut oil found to be most effective as PPD. Copolymers with higher concentration of green units showed better performance as viscosity modifier, pour point depressant and AW performance along with excellent biodegradability. POLYM. ENG. SCI., 2017. © 2017 Society of Plastics Engineers

Synthesis and optical properties study of nanocomposites based on AuNPs and AgNPs obtained by laser ablation in liquid monomer

In this work, Ag and Au nanoparticles (AgNPs and AuNPs) stable colloid solution were prepared by laser ablation of chemically pure silver rod and gold film in liquid monomer isodecyl acrylate (IDA). Sizes of obtained nanoparticles were determined by scanning electron microscope and vary from 30 to 130 nm. Nanocomposites films were prepared from obtained stable colloid solution by photocuring. To prepare solid film based on aliphatic polymer IDA long molecules cross-linking, 1,6-Hexandiol diacrylate was used. Obtained films were transparent, homogenous and colored in brown for AgNPs and purple for AuNPs-filled nanocomposites. Prepared nanomaterials exhibit strong third-order nonlinear optical responses under CW laser irradiation at 532 nm, which was estimated by using z-scan technique performed with open and close aperture. The real and imaginary parts of third-order nonlinear optical coefficients of the studied nanocomposites were found to be up to Reχ(3) = 1.31 × 10−5 (esu) and Imχ(3) = 7.64 × 10−5 (esu), for samples negative nonlinear refractive index was obtained, which corresponds to self-defocusing effect.

Nanoparticles of organic nonlinear optical molecular crystals synthesized by laser ablation in liquid

In this work, nanoparticles of nonlinear optical organic molecular cocrystal DAST (4-dimethylamino-N-methylstilbazolium p-toluenesulfonate) were obtained by pulsed laser ablation in liquid monomer isodecyl acrylate (IDA). Sizes of obtained nanoparticles were determined by scanning electron microscope and were about 200 nm in width. Laser ablation does not lead to photocuring or photodegradation of liquid monomer. Ablation processes was similar to the processes in classical liquids (water, organic solvents). Since in this case the nanoparticles were synthesized directly in the liquid medium of the surfactant monomer, so they are stabilized in it. Nanocomposites films were synthesized on the basis of these stable colloid solution by photocuring. For aliphatic polymer IDA long molecules cross-linking 1,6-Hexandiol diacrylate was used (DIOL). Optical properties of colloid solution and nanocomposites were investigated. It was found that obtained nanoparticles are amorphous form of DAST cocrystal and have a rod-like shape. Also dodecane and polyphenelene ether were tried in this work as liquids with different viscosity to find its effect on size and shape of nanoparticles.

Optical, structural and nonlinear optical properties of laser ablation synthesized Ag nanoparticles and photopolymer nanocomposites based on them

In this work Ag nanoparticles (NPs) stable colloid solution were prepared by laser ablation of chemically pure silver rod in liquid monomer isodecyl acrylate (IDA). Sizes of obtained nanoparticles were determined by scanning electron microscope and vary from 27 to 120nm. Nanocomposites films were prepared from obtained stable colloid solution of AgNPs by photocuring. For aliphatic polymer IDA long molecules cross-linking Diurethane dimethacrylate, 1,6-Hexandiol diacrylate and Tetra (ethylene glycol) diacrylate were used. Prepared nanomaterials exhibit strong third-order nonlinear optical responses, which was estimated by using z-scan technique. The third-order nonlinear optical coefficients of the studied nanocomposites were found to be up to Reχ(3)=1.31×10−5 (esu) and Imχ(3)=7.64×10−5 (esu).

Biodegradable multifunctional additives for lube oil: Synthesis and characterization

ABSTRACTHomopolymers of isodecyl acrylate and isooctyl acrylate and copolymers of each of them with β-pinene (BP) were synthesized and characterized by spectral, thermogravimetric, and gel permeation chromatographic analysis. Pour point depressant (PPD) and viscosity index improver (VII) properties were tested with additive-doped base oil in terms of pour point (PP) and viscosity index (VI), respectively. Although the isodecyl acrylate polymers were thermally more stable than the isooctyl acrylate polymers, the latter showed higher VI and PPD efficiency. VI and PP values of the additive-doped base oils depend on the nature of mineral base oils as well as on the type and concentration of VII. In addition, introduction of BP moiety in the acrylate backbone has induces excellent biodegradability in the above polymers.

Isodecyl acrylate - olive oil copolymers as potential biodegradable additive for lubricating oil

The use of greener additives based on vegetable oils in the formulation of bio-lubricant has attracted considerable interest due to their biocompatibility and enhanced multifunctional performances compared to conventional additives. Working in this direction and in an anticipation of introducing biodegradability in to the acrylate based additive system, copolymers of isodecyl acrylate with olive oil have been synthesized by thermal method using BPO (benzoyl peroxide) as radical initiator. Characterization of the prepared polymers has been performed by spectral (NMR, IR), and SEC-GPC analysis. Performance evaluation of the polymers as pour point depressant (PPD), and viscosity modifier/viscosity index improver (VII) in different base oils (mineral) have been performed by standard ASTM methods. Biodegradability of the prepared additives was tested against fungal pathogens and microorganisms by disc diffusion (DD) method and by soil burial test (SBT) method respectively. Thermal stability of each of them has been evaluated and included. The multifunctional performances have been compared and reported. The copolymers showed potential multifunctional additive performance as viscosity modifier and pour point depressant along with excellent biodegradability.

Lipidoid Tail Structure Strongly Influences siRNA Delivery Activity

RNA interference therapeutics have been limited, in large part, by the lack of efficient, non-toxic, non-immunogenic delivery systems. Among previously established methods, lipidoid nanoparticles (LNPs) show particular promise in delivering siRNA to diverse cell and organ targets in vitro and in vivo. However, a better understanding of structure–function relationships is needed to facilitate broad translation to clinical applications. Here, we demonstrate the critical role of tail chemistry in conferring delivery efficacy to lipidoid molecules with three or four aliphatic tails. Tail length and structure significantly affected siRNA transfection in HeLa cells, with methacrylate (vs. acrylate) tails and tails containing ethers causing reductions in efficacy. Notably, we report a novel tail precursor, isodecyl acrylate, that conveyed marked siRNA delivery ability in vitro and in vivo. LNPs with isodecyl acrylate lipidoids uniformly induced greater than 90% gene silencing, both in vitro and in mice (hepatocytes), at 40 nM and 0.1 mg/kg, respectively. Furthermore, we found that tail chemistry significantly influenced the surface pKa values of formulated LNPs, with tails that conferred higher pKa facilitating higher levels of gene knockdown. Together, these data underscore the importance of lipidoid tail structure and provide guidance for the development of next generation lipid nanoparticle siRNA delivery systems.

Polyacrylates and Acrylate-α-olefin Copolymers: Synthesis, Characterization, Viscosity Studies, and Performance Evaluation in Lube Oil

Homopolymer of isodecyl acrylate and dodecyl acrylate and their copolymers with different compositions of 1-decene were synthesized and characterized. Viscosity measurements of synthesized polymers in toluene solution at 313 K were performed. Six different equations, viz. Huggins, Kraemer, Martin, and Schulz-Blaschke (graphic extrapolation method) and Solomon-Ciuta, Deb-Chatterjee, and Schulz-Blaschke (by a single point determination method) were used to calculate intrinsic viscosity and viscometric constants of the polymer solutions. Molecular weight of the synthesized polymers was determined by the Mark Houwink-Sukurda equation. The pour point and viscosity index of the polymers were evaluated in lube oils.

Synthesis, Characterization, and Performance Evaluation of Some Multifunctional Lube Oil Additives

Eight polymers (two homopolymers and six copolymers with 1-decene) of isodecyl acrylate and isooctyl acrylate were synthesized using benzoyl peroxide as initiator and characterized by spectral analysis, viscometric, and thermogravimetric measurements. Intrinsic viscosity obtained from the viscometric method was used to determine the viscometric molecular weight of the polymers. Pour point (PP) and viscosity index (VI) of the additive-doped base oils were evaluated to check the efficiency of the polymers as pour point depressant (PPD) and viscosity index improver (VII), respectively. Analysis of different properties indicates that the isooctyl acrylate polymers have better lube oil additive property than that of isodecyl acrylate polymers. VI and PP values of the polymers doped in base oils depend on the nature of mineral base oils, polymer type, and also on the concentration of the additives.

Atomized spray plasma deposition (ASPD) of structurally well-defined alkyl functionalized layers

Plasmachemical deposition using an atomized precursor spray can yield up to a 1000-fold enhancement in film deposition rate (microns/min). Furthermore, excellent functional and structural retention is achieved, which is in marked contrast to corresponding vapour-phase-plasma deposition for comparable input plasma powers. Poly(isodecyl acrylate) layers have been prepared by atomized spray plasma deposition (ASPD) using isodecyl acrylate precursor.

Synthesis of Emulsion-Templated Acrylic-Based Porous Polymers: From Brittle to Elastomeric

High internal phase emulsion polymers (PolyHIPEs) are novel materials that have high porosity and interconnected open-cell structure and are used in various applications such as supports for catalytic systems, media for separation of similar molecules, and scaffolds for tissue engineering. In this study, 90% porous acrylic based polyHIPE structures with various cellular structure and mechanical characteristics were developed by using stearyl acrylate (SA), isodecyl acrylate (IDA), isobornyl methacrylate (IBMA), and divinylbenzene (DVB). Elastomeric polyHIPEs were produced from the comonomers of SA and IDA, and had high ability of recovery when the applied stress was removed. IBMA based polyHIPEs were brittle and demonstrated higher Young's modulus and compression strength than that of conventional styrene based polyHIPEs at the same void volume. Therefore, by varying the composition, it became possible to alter the mechanical properties of polyHIPEs from brittle to elastomeric, without changing the interconnected cellular structures.

Synthesis and Evaluation of Acrylate Polymers in Lubricating Oil

Additives based on polymers of alkyl acrylate used in lubricant composition improve the viscometric and rheological properties of the lubricant and provide fuel economy. However, the recent demand for eco-friendly technology prompted us to develop biodegradable additives for the lubricant formulation. Thus, in anticipation of getting an ideal blend of performance as well as eco-friendly chemistry, the present investigation comprising the incorporation of an α-pinene (α-p) moiety into the acrylate (dodecyl acrylate, DDA, and isodecyl acrylate, IDA) skeleton through copolymerization was undertaken. The analysis of different properties of the polymers indicates that copolymers of α-pinene with DDA have more thermal stability and better pour point and viscosity index (VI) values than the copolymers of α-pinene with IDA. However, the study of the biodegradability test indicates that the copolymers of α-pinene with IDA are better than the other and they show significant biodegradability against the fungal patho...

Reprint of: Extension of a compressible lattice model to CO2 + cosolvent + polymer systems

We have recently proposed a compressible lattice model for C0 2 + polymer systems in which CO 2 forms complexes with one or more functional groups in the polymer. Furthermore, we have shown that this model is able to simultaneously correlate phase equilibria, sorption behavior, and glass transition temperatures in such systems. In the present work, we extend the model to ternary C0 2 + cosolvent polymer systems and demonstrate that cloud point behavior in C0 2 +dimethyl ether + poly (e-caprolactone), C0 2 + dimethyl ether + poly (isopropyl acrylate), and C0 2 + dimethyl ether + poly (isodecyl acrylate) systems can be predicted using parameters obtained from binary data. Our results also suggest that dimethyl ether may form weak complexes with poly (e-caprolactone), poly (isopropyl acrylate), and poly (isodecyl acrylate).