کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5178686 | 1502503 | 2016 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: High molecular weight poly(cycloacetals) towards processable polymer materials High molecular weight poly(cycloacetals) towards processable polymer materials](/preview/png/5178686.png)
- New, high molar mass poly(cycloacetals) were synthesized starting from di-trimethylolpropane and available dialdehydes.
- The poly(cycloacetals) display high thermal stability, ductile behavior and transparancy.
- The resulting polymers are hydrolytically stable as demonstrated by degradation tests in acid conditions.
Processable poly(cycloacetals) with high molar masses (Mn) up to 38 kDa were synthesized in a systematic manner. Di-trimethylolpropane (Di-TMP) was used as tetravalent alcohol and was combined with a series of available dialdehydes, after a model reactivity study. These polymers have a high thermal stability with degradation temperatures (Td) up to 370 °C while the glass transition temperatures (Tg) ranged from room temperature to 115 °C. Trends in Tg modulation were confirmed by a theoretical simulation. Moreover, the poly(cycloacetals) showed favourable mechanical and optical properties.
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Journal: Polymer - Volume 103, 26 October 2016, Pages 98-103