Biodegradability study of polylactic acid/ thermoplastic polyurethane blends
نویسندگان
چکیده
منابع مشابه
Study on Histocompatibility and Biodegradability of Polylactic Acid Gel in Rats
Objective: To investigatethe effects on histocompatibility and biodegradability of bioabsorbablepolylacticacid (PLA) gelin rats. Methods: Longitudinal incision of 30 mm was made along the spine, and subcutaneous tissues were separated bluntly to make four subcutaneous pouches, and PLA gel of different molecular weight (5, 10 and 20 kD) was implanted into the pouches. 4, 7, 11 and 14 weeks after...
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In the present investigation, a compatibilized blend of thermoplastic polyurethane (TPU) and polydimethylsiloxane (PDMS) is prepared by using copolymer of ethylene and methyl acrylate (EMA) as a reactive compatibilizer. Detailed in vitro biocompatibility studies were carried out for this compatibilized blend and the material was found noncytotoxic towards L929 mouse fibroblast subcutaneous conn...
متن کاملThe Effects of Thermoplastic Polyurethane on the Structure and Mechanical Properties of Modified Polypropylene Blends
In this study, a melt-compounding process was used to produce ordinary polypropylene (PP)/thermoplastic polyurethane (TPU) blends and modified impact-resistant polypropylene (MPP)/TPU blends. The influences of TPU on the blending morphology, melting behavior, crystallization behavior, and mechanical properties of these blends were investigated. Differential scanning calorimetry results show tha...
متن کاملStress-Strain Behavior of Thermoplastic Polyurethane
The large strain nonlinear stress-strain behavior of thermoplastic polyurethanes (TPUs) exhibits strong hysteresis, rate dependence and softening. Thermoplastic polyurethanes are copolymers composed of hard and soft segments. The hard and soft segments phase separate to form a microstructure of hard and soft domains typically on a length scale of a few tens of nanometers. Studies have revealed ...
متن کاملBiodegradability of injection molded bioplastic pots containing polylactic acid and poultry feather fiber.
The biodegradability of three types of bioplastic pots was evaluated by measuring carbon dioxide produced from lab-scale compost reactors containing mixtures of pot fragments and compost inoculum held at 58 °C for 60 days. Biodegradability of pot type A (composed of 100% polylactic acid (PLA)) was very low (13 ± 3%) compared to literature values for other PLA materials. Near infrared spectrosco...
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ژورنال
عنوان ژورنال: Polymer Testing
سال: 2015
ISSN: 0142-9418
DOI: 10.1016/j.polymertesting.2015.07.011