Effects Of Polymer Treatment Research Articles

Effects of Polymer Treatment on Polypropylene Fibre Reinforced Mortar at the Fibre/Matrix Interfacial Transition Zone

Polypropylene, a widely used thermoplastic, has become a major contributor to environmental waste due to its extensive production and the gradual degradation of its fibres. To address this critical issue, a comprehensive study was undertaken to investigate the impact of polypropylene fibre reinforcement in mortar. The study involved a battery of tests designed to evaluate the effectiveness of this approach. Results indicated that the optimal percentage of polypropylene fibres for achieving maximum compressive strength after 7 and 28 days was found to be 0.4%. This percentage performed best within a specific water-to-cement ratio (w/c) range of 0.6 to 0.8. Additionally, the research revealed that the most effective combination for enhancing flexural strength was a water-to-cement ratio (w/c) in the range of 0.6 to 0.8, along with a 0.6% polypropylene fibre content. It's worth noting that this innovative technique not only promises to bolster the strength characteristics of mortar but also offers a sustainable solution by reducing the environmental burden associated with polypropylene waste. These findings have significant implications for achieving commercial and engineering goals while addressing the limitations of traditional mortar practices. In summary, the study offers a promising path toward enhanced construction materials and reduced environmental impact.

Quantify the effect of temperature on the electrical resistivity, yield stress, and HPHT fluid loss of the bentonite-clay drilling mud modified with acrylamide polymer

In this study, the effect of acrylamide polymer modified bentonite on the fluid loss and yield stress of water-based drilling mud at different temperatures up 85 °C were studied. Bentonite content in the drilling mud was varied from 2 to 8% by the weight of water. The polymer content was varied between 0 and 0.24% by the weight of bentonite. The bentonite and polymer were characterized using X-ray analysis and thermal gravimetric analysis (TGA). Based on the X-ray diffraction analyses the major constituents of the bentonite were montmorillonite (MMT), (Na, Ca)0.33(Al, Mg)2(Si4O10)(OH)2·nH2O), feldspar (Albite) (NaAlSi3O8), kaolinite (Al2Si2O5(OH4)), Beidellite (Na, Ca0.5)0.3Al((Si, Al)4O10)(OH)2·nH2O and quartz (SiO2), also it was shown the major constituents of acrylamide polymer were ammonium hydroxide carbonate amine ((NH4)·CH3CONH2) and ammonia hydrate (2NH3H2O). The results showed that the polymer-modified bentonite decreased the fluid loss of the drilling mud by 28–52% based on the bentonite content and temperature in drilling mud. TGA analyses showed a notable reduction in the weight of bentonite between 600 and 800 °C. Modifying the bentonite using 0.24% of polymer reduced the total weight loss at 800 °C from 6.42 to 1.26%. an 80% reduction. The polymer modification decreased the yield stress (τo) of drilling mud by 30–60% based on the bentonite content and temperature. The results showed that fluid loss decreased with an increasing amount of polymer. The electrical resistivity of the drilling mud decreased from 8.5 to 3.9 Ω-m, a 53% reduction when the bentonite content increased from 2 to 8% at room temperature. The electrical resistivity of the filter cake formation of the bentonite drilling mud modified with 0.24% polymer decreased by 33–57% based on the bentonite content and temperature. The polymer is an excellent potential additive for reducing the fluid loss and yield stress of drilling muds. The effects of bentonite and polymer content on the model parameters have been quantified using a nonlinear model (NLM). The NLM quantified the effect of polymer treatment on all the model parameters.

Effects of Polymer Treatment on Undrained Strengths and Cyclic Behavior of a Low-Plasticity Slurry

AbstractA laboratory study was undertaken to assess the effects of polymer treatment (PT) on the monotonic, cyclic, and postcyclic behavior of a low plasticity slurry using a direct simple shear (D...

Using centrifuge data to investigate the effects of polymer treatment on relative permeability

Using centrifuge data to investigate the effects of polymer treatment on relative permeability

A Theoretical Analysis of the Effect of External Polymers on the Wrinkle Recovery of Fabrics

The improvement observed in the wrinkle recovery of wool fabrics treated with certain external elastomeric polymers has previously been attributed to the presence of interfiber bonds, which considerably reduce the frictional component of wrinkling and provide an additional elastic restoring moment, aiding the return of the fabric to its undeformed state. These mechanisms are shown to be quantitatively consistent with the additional experimental evidence now available, including the effects of polymer treatment on a series of wool/polyester blend fabrics and the observation that washing of a polymer-treated fabric can sometimes improve its wrinkle recovery. The theory is used to separate the effects due to energy stored in the elastomer and those due to increased fiber strains.