کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5202405 | 1381899 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization and ageing study of poly(lactic acid) films plasticized with oligomeric lactic acid
ترجمه فارسی عنوان
بررسی و بررسی پیری پلی کربنات اسید (اسید لاکتیک) با اسید لاکتیک الیگومر پلاستیسیته شده است
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
Poly(lactic acid) (PLA) was melt-blended with a bio-based oligomeric lactic acid (OLA) plasticizer at different concentrations between 15Â wt% and 25Â wt% in order to enhance PLA ductility and to get a fully biodegradable material with potential application in films manufacturing. OLA was an efficient plasticizer for PLA, as it caused a significant decrease on glass transition temperature (Tg) while improving considerably ductile properties. Only one Tg value was observed in all cases and no apparent phase separation was detected. Films obtained by compression moulding were stored during 3 months under ambient controlled conditions and thermal, mechanical, structural and oxygen barrier properties were studied in order to evaluate the stability of the PLA-OLA films over time. Blends with 20 and 25Â wt% OLA remained stable and compatible with PLA within the ageing period. Besides, PLA-20Â wt% OLA formulation was the only one which maintained its amorphous state with adequate thermal, mechanical and oxygen barrier properties for flexible films manufacturing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 98, Issue 2, February 2013, Pages 651-658
Journal: Polymer Degradation and Stability - Volume 98, Issue 2, February 2013, Pages 651-658
نویسندگان
Nuria Burgos, Verónica P. Martino, Alfonso Jiménez,