Structure and Thermal Properties of Cellulose Diacetate-Graft-Poly(lactic Acid) Copolymer

Abstract:

To improve the thermal behavior of cellulose diacetate, cellulose diacetate-graft-poly(lactic acid) copolymers (CDA-g-PLAs) were synthesized by ring-opening polymerization of L-lactide using stannous octoate (Sn(Oct)2) as catalyst. The molecular structure of the copolymer was characterized by FT-IR and 1H-NMR and the thermal properties were investigated by differential scanning calorimetry (DSC) and thermogravimetric analysis (TG-DTA). The results showed that the product was grafted copolymer of cellulose diacetate-graft-poly(lactic acid) with different side-chain structure. The thermal processing properties of CDA-g-PLAs are remarkably improved with melting temperature(Tm) about 140°C which lower than that of CDA and decomposition temperature (Td) higher than 260°C.

• Periodical: Advanced Materials Research (Volume 221)
• Pages: 85-89
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.221.85
• Online since: March 2011
• Authors: Wen Jian Deng, Xu Pin Zhuang, Ke Tian Guan, Bo Wen Cheng
• Keywords: Biodegradable Plastic, Cellulose Diacetate, Grafted Copolymerization, Poly(lactic acid) (PLA), Thermal Property

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