Biodegradable polymers play a significant role in medical applications, especially internal devices because they can be broken down and absorbed into the body without producing harmful degradation products. In this study, biodegradable polylactic acid (PLA)-polyhydroxyalkanoate (PHA)-based nanocomposites with various PHA nano-hydroxyapatite (nHAp) contents were prepared using solution casting method. Mechanical properties, microstructure, thermal stability, vitro of PLA-PHA-based composites...

This work aims to improve the mechanical properties of starch-based hydrogels using a double-network (DN) strategy. The single network (SN) starch hydrogel was first prepared glutaraldehyde as crosslinker. compressive SN were influenced by both crosslinker content and crosslinking time. possessing best then fabricated into DN hydrogels. Poly(vinyl alcohol) (PVA) borax used secondary polymer crosslinker, respectively. PVA-borax complexation partly enhanced hydrogel's modulus 30% its toughness...

Poly(lactic acid) (PLA) exhibits excellent shape memory properties but suffers from brittleness and a high glass transition temperature (Tg), limiting its utility in flexible durable applications. This study explored the modification of PLA through incorporation poly(ethylene glycol) (PEG), varying both content (5–20 wt%) molecular weight (4000–12,000 g/mol), to enhance suitability for specific applications, such as medical splints. The PLA/PEG blend, containing 15 wt% PEG with 12,000 g/mol,...

The overall goal of this study was to fabricate multifunctional core-shell microcapsules with biological cells encapsulated within the polymer shell. Biocompatible temperature responsive comprised silicone oil droplets (multicores) and yeast embedded in a matrix (shell) were prepared using novel microarray approach. cross-linked shell multicores formed situ via photopolymerization either poly(N-isopropylacryamide)(PNIPAm) or PNIPAm, copolymerized poly(ethylene glycol monomethyl ether...

Bamboo leaf fiber (BLF) was incorporated into an eco-friendly foam cushion made from natural rubber latex (NRL) to enhance the biodegradation rate. The objective of this work investigate effects BLF content on structure, mechanical properties, performance, and biodegradability. NRL nets with without were prepared using Dunlop method along microwave-assisted vulcanization. (90–106 µm in length) at various loadings (0.00, 2.50, 5.00, 7.50, 10.00 phr) introduced compounds before gelling...

The effect of morphology PNIPAm, PEGMa and PNIPAm-co-PEGMa hydrogels on the uptake delivery (release kinetics) a model drug (FITC–dextran) was investigated. Two types hydrogel architectures: microgels microcapsules, without with core–shell morphology, were synthesized. microcapsules had 30–50% greater compared to corresponding microgel architecture. estimated pore size for 78, 92 130 Å, respectively. release performed at 25, 37 (physiological temperature), 45 °C (targeted stimulating...

Generally, poly(ethylene glycol) (PEG) is added to poly(lactic acid) (PLA) reduce brittleness and improve mechanical properties. However, shape memory properties of PEG/PLA blends suffered due the blend's incompatibility. To enhance abilities blends, 0.45% maleic anhydride-grafted (PLA-g-MA) was used as a compatibilizer. Thermal properties, morphologies, microstructures, containing different PLA-g-MA contents were investigated. The compatibilized blend with 2 wt% exhibited enhanced tensile...

In this study, we utilized a hybridization approach for two different fibers to overcome the drawbacks of single-fiber-reinforced PLA composites. Coir fiber and bamboo leaf were used as reinforcing natural their properties complement one another. Additionally, combined thermal annealing with techniques further improve overall The results showed that BF: CF ratio 1:2 gave PLA-based hybrid composites optimal mechanical properties. Furthermore, improvement in stability composites, attributable...

Thermo-responsive, biocompatible polyurethane (PU) with shape memory properties is highly desirable for biomedical applications. An innovative approach to producing wound closure strips using polymers (SMPs) of significant interest. In this work, PU composed polycaprolactone (PCL) and 1,4-butanediol (BDO) was synthesized two-step polymerization. Palm oil (PO) added enhancing the Young’s modulus beyond set criterion 130 MPa. It found that had ability crystallize at room temperature segments...

This study illustrated the potential applications of thermoresponsive poly(N-isopropylacrylamide) (PNIPAm) grafted nylon membranes with different grafting yields and architecture. The gating performance at temperatures below above lower critical solution temperature (LCST) PNIPAm (32 °C) were demonstrated. linear PNIPAm-grafted membrane exhibited a sharp response over range 20–40 °C. yield 25.5% 21.9%, for crosslinked respectively, highest function water flux had stable repeatable...

This study aimed to investigate the effects of blend composition on packaging-related properties poly(lactic acid) (PLA) and low density polyethylene (LDPE) blown films. Blend films with PLA contents 5–20 wt% were produced compared. Scanning electron micrographs cross-sectional cryofractured surfaces revealed that in situ fibre-reinforced composites obtained. Viscosity ratio polymer components ca 1 confirmed fibre formation was favourable for this system. microdomains dispersed throughout...

Nano-hydroxyapatite (nHAp) as a bio-filler used in PLA composites was prepared from fish by acid deproteinization (1DP) and combination of acid-alkali (2DP) followed alkali heat treatment. Moreover, the PLA/nHAp composite films were developed using solution casting method. The mechanical thermal properties with nHAp different steps contents compared. physical analysis confirmed that can be scales both deproteinization. 1DP-nHAp showed higher surface area lower crystallinity than 2DP-nHAp....

ABSTRACT The cold‐crystallization and crystal evolution of amorphous poly(lactic acid) (PLA) are analyzed during multistep tensile deformation annealing at 70°C using in situ synchrotron wide‐angle X‐ray scattering (WAXS) measurements. 2D‐WAXS diffraction pattern reveals that the PLA crystalline structure forms perpendicular to draw direction. process lets a rearrangement structure, while stretching causes contraction. Both WAXS FTIR analyses confirm crystals developed through α′‐form....

The purposes of this research are to study the effect different natural antimicrobial agents and evaluate their functional groups inhibition reactivity on bacterial growth.The investigated were aloe vera powder citric acid.The evaluation activity was done by using agar well diffusion method.The bacteria used for assessment Staphylococcus aureus (S. aureus) Escherichia coli (E.coli).The Fourier Transform Infrared (FTIR) spectroscopy.Only agent acid showed significant towards both diameter...

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This study explores the enhancement of electrical conductivity in polymer composites by incorporating carbon nanotubes (CNTs) into a co-continuous poly(lactic acid)/low-density polyethylene (PLA/LDPE) blend, creating double percolation structure. Theoretical thermodynamic predictions indicate that CNTs preferentially localize LDPE phase. The threshold PLA/LDPE/CNT was 0.208 vol% (5.56 wt%), an 80% reduction compared to LDPE/CNT composite, due migration from PLA significantly enhanced...

Abstract Cast films of liquid crystalline polymer (LCP) and low density polyethylene (LDPE) blends have been produced investigated. Effects LCP content processing parameters, i.e., temperature profile, screw speed, post‐die drawing, on morphology O 2 barrier property are presented. Increasing tend to enhance aspect ratios (L/D) the dispersed phase at same time influencing structure. These effects clearly observed when is increased from 10 % 30 by wt. At high profiles, morphologies presented...