Enantiomeric stereo random copolymers (SRCs), l-lactic acid-rich poly (lactic acid)s (L -PLAs) and d-lactic (D-PLAs) with major monomer unit fraction down to 85% were synthesized from mixtures of l- acids their stereocomplex (SC)- homo-crystallization the melt investigated. The obtained results compared those previously reported for enantiomeric SRCs, l-lactide-rich (l-lactide-co-d-lactide)s d-...

Abstract High temperature rubbing is a fast and low‐cost method that can align semi‐crystalline polymers such as poly(lactic acid) (PLA) by application of shear‐force via rotating cylinder covered with microfiber cloth on thin film maintained at high temperature. A multi technique approach uncovers the role thickness PLA structure. Both poly( l ‐lactic (PLLA) stereo‐complex (SC‐PLA) be readily ...

Continuous polysaccharide fibers and nonwovens—based on cellulose, hydroxypropyl chitosan, or alginate—containing biopolymeric microcapsules (MC) mesoporous silica nanoparticles (MSN) are prepared using a wet-spinning solution blowing technique. The MCs homogeneously distributed in the fiber matrices whereas MSNs form discrete micron-sized aggregates as demonstrated scanning electron-, fluoresc...

Damage to peripheral nerves often cannot be repaired by the juxtaposition of the severed nerve ends. Surgeons have typically used autologous nerve grafts, which have several drawbacks including the need for multiple surgical procedures and loss of function at the donor site. As an alternative, the use of nerve guidance channels to bridge the gap between severed nerve ends is being explored. In ...

Biocompatible graft copolymers from bacterial poly(γ-glutamic acid) and poly(lactic are realized using a “grafting to” approach combined with click chemistry.

A series of copolymers of glycine and DL-lactic acid with various compositions was synthesized and their in vivo and in vitro degradation behavior was studied. For the in vivo examination, discs of the copolymer films were subcutaneously implanted in rats. The in vitro studies were carried out in phosphate buffer at pH = 7.4 and 37 degrees C. The decrease in molecular weight, the loss of weight...

background and objective: lactic acid is widely used in the food, chemical and pharmaceutical industries. the major problems associated with lactic acid production are substrate and end-product inhibition, and by-product formation. membrane technology represents one of the most effective processes for lactic acid production. the aim of this work is to increase cell density and lactic acid produ...

The theoretical and analyzed data incorporated in this article are related to the recently published research article entitled "Thermal degradation behaviour of nanoamphiphilic chitosan dispersed poly (lactic acid) bionanocomposite films" (http://dx.doi.org/10.1016/j.ijbiomac.2016.11.024) (A.K. Pal, V. Katiyar, 2016) [1]. Supplementary information and data (both raw and analyzed) are related to...

the purpose of this study was to investigate the effect of additives, poly(ethylene glycol) (peg) 1450, poloxamer 407, polyvinyl alcohol (pva) and sodium chloride in order to improve physico-chemical characteristics, encapsulation efficiency and in vitro release of bovine serum albumin, form poly(d,l-lactic-co-glycolic acid) (plga) microparticles prepared by the w/o/w solvent evaporation method...