کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7889475 | 1509860 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of nanoscale dispersed silica on the fabrication of microporous poly(l-lactic acid) by uniaxial stretching
ترجمه فارسی عنوان
اثر سیلیس پراکنده نانومقیاس بر ساخت پلی اتیلن میکروپور (اسید لاکتیک) توسط کشش یکپارچه
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
The microporous poly(l-lactic acid) (PLLA) was prepared successfully by uniaxial stretching PLLA with nanoscale dispersed silica as pore forming agent. The SEM results revealed that the silica dispersed uniformly in the PLLA matrix with the form of monodispersed nanoparticles or nanoscale aggregates when the content was 3-20â¯wt%. The number and size of the micropores and the porosity for the microporous PLLA were increased with the increase of silica content, stretching ratio and stretching rate (5-20â¯mm/min), while were reduced with the rise of stretching temperature. The stretching ratio of 2.5 was the key point for pore forming when silica content was under 10â¯wt%. The porosity was up to 21.1% with the silica content of 20â¯wt% and stretching ratio of 4.5. The mechanical properties and thermal insulation properties of microporous PLLA were also improved comparing with that of PLLA without pores.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 112, September 2018, Pages 423-431
Journal: Composites Part A: Applied Science and Manufacturing - Volume 112, September 2018, Pages 423-431
نویسندگان
Yunjing Chen, Lijing Han, Helong Chen, Shiling Jia, Lisong Dong,