Poly(L-lactic acid) filaments were prepared by high speed melt spinning at take-up velocities up to 5000 m/min. The crystallinity, birefringence, tensile strength, Young's modulus and yield strength all exhibit maxima at take-up velocities between 2000 and 3000 m/min. The boiling water shrinkage exh
Melt spinning of poly(L-lactic acid) and its biodegradability
β Scribed by Yoshiro Nishimura; Akinori Takasu; Yoshihito Inai; Tadamichi Hirabayashi
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 174 KB
- Volume
- 97
- Category
- Article
- ISSN
- 0021-8995
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In vitro degradation of poly( L-lactic acid) fibers was investigated for a period of 16 weeks in Ringer solution at 37ΠC. Two sets of fibers, with similar initial mechanical properties, molar mass, and crystallinity content, but markedly different in diameter (72 and 120 mm) were studied. Viscometri
## Abstract Directly starting from Lβlactic acid (LA) and Lβaspartic acid (Asp), biodegradable material poly(lactic acidβ__co__βaspartic acid) [P(LAβ__co__βAsp)] was synthesized via melt polycondensation. The synthetic conditions, including type and dosage of catalyst, temperature, and time of copo