Lactic acid is one of the functional and valuable compounds utilized in food, pharmaceutical, and chemical industries while Poly lactic acid (PLA) is a biodegradable polymer that has a variety of applications. In recent years, microbial conversion of renewable raw materials has become an important objective in industrial biotechnology. Among many raw materials available, tapioca starch is consi...

In this work, rheological properties of poly(lactic acid) (PLA), low density polyethylene (LDPE) polymer blends were investigated in the molten state. The experiments were carried on a capillary rheometer. The effect of shear stress, temperature and blending ratio on the flow activation energy at a constant shear stress and melt viscosity of the blends are described. The results showed that the...

A chemo-mechanical method was used to prepare cellulose nanofibrils dispersed uniformly in an organic solvent. Poly(ethylene glycol) (PEG 1000) was added to the matrix as a compatibilizer to improve the interfacial interaction between the hydrophobic poly(lactic acid) (PLA) and the hydrophilic cellulose nanofibrils. The composites obtained by solvent casting methods from N,N-Dimethylacetamide (...

Cow manure is an abundant residue and poses a problem regarding recycling. Intensive animal farming produces manure, which, if not properly managed, can contaminate nearby water bodies soils with nutrient excess. There are 1.9 billion cattle worldwide, calculated capacity to produce 7.6 tons per year. Feeding of these cows carried out mainly cellulosic material. Therefore, cow contains importan...

Abstract A simple chain‐extension reaction using diisocyanate as a chain extender was adopted to increase the molecular weight of low‐molecular‐weight (LMW) poly(lactic acid) (PLA) synthesized via direct polycondensation and recover commercial PLA after service life. The slow between carboxylic acid terminus successfully accelerated Mg(II) catalyst, affording linear chain‐extended (cePLA) conne...

3D printing technology is known as the core of “the third industrial revolution”. Poly (lactic acid) (PLA) a new type biodegradable thermoplastic resin, which renewable. It has wide range raw materials. also properties high strength, good biocompatibility, excellent mechanical properties, and transparency. Hydrotalcite (HT) was synthesized by coprecipitation method modified to prepare HT/PLA co...

Abstract The present research investigates the hydrolytic degradation of ternary blends composed poly(ethylene- co -vinylacetate) (EVA), poly(lactic acid) (PLA), and poly(styrene- -methyl methacrylate)(poly(S- -MMA) (SMMA) (EPS) at a temperature 37 °C pH 7.4, monitoring changes in phosphate buffer solution for 6 months. In addition, mechanical behavior morphology were evaluated from comparison ...

Optical properties of biphenyl difluoroboron β-diketonates were studied in poly(lactic acid) (PLA) blends. Increased conjugation lowered the emission energy, decreased the singlet-triplet energy gap and yielded blue thermally activated delayed fluorescence (TADF). The properties of these biphenyl dyes may inform organic light emitting diode (OLED) and bioimaging agent design.

3D printing is a popular fabrication technique because of its ability to produce complex architectures. Melt-based widely used for thermoplastic polymers like poly(caprolactone) (PCL), poly(lactic acid) (PLA), and poly(lactic-co-glycolic (PLGA) their low processing temperatures. However, traditional melt-based techniques require temperatures pressures high enough achieve continuous flow, limiti...

Poly(lactic acid) (PLA)/palygorskite (Paly) nanocomposites were prepared using the melt compounding technique. Paly modified by 3-aminopropyltriethoxysilane (APTES) and vinyltrimethoxysilane (VTMS) was used as nanofiller for PLA with concentrations in 1–7 wt% range. It has been found that functionalization allows a covalent bond between hydroxyl groups of matrix, evidenced improvement mechanica...