Synthesis and Characterization of Retardant Polyurethanes Based on Polylactide

doi:10.11944/j.issn.1000-0518.2016.01.150174

Chinese Journal of Applied Chemistry ›› 2016, Vol. 33 ›› Issue (1): 47-52.DOI: 10.11944/j.issn.1000-0518.2016.01.150174

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Synthesis and Characterization of Retardant Polyurethanes Based on Polylactide

YANG Lixin(),HU Xiuli,HUANG Yubin,JING Xiabin()

State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China

Received:2015-05-18 Accepted:2015-09-28 Published:2016-01-05 Online:2016-01-05
Contact: YANG Lixin,JING Xiabin
Supported by:
Supported by the National Natural Science Foundation of China(No.51003101)

Abstract

Abstract:

A series of retardant polyurethanes(PUs) was synthesized from polylactide diol, hexamethylenediisocynate(HDI) and 2,2-bis(bromomethyl)-1,3-propanediol(DBNPG). The properties of PUs were characterized by FTIR, ¹H NMR, mechanical test and GPC. The results show that DBNPG as a chain extender can meet the requirement of obtaining high molecular mass PUs. The longer chain of PLA and higher content of hard segment in PUs lead to an enhanced crystallinity of PUs. The tensile strength of PUs is close to 50 MPa, comparable to that of industrialized polylactide, showing a good mechanical property. The retardant ability of PUs increases with an increase of bromine mass fraction in PUs. Nonflammable PUs can be obtained when the mass fraction of bromine in PUs is beyond 8.6%.

Key words: brominated flame retardant, polylactide, polyurethane

YANG Lixin, HU Xiuli, HUANG Yubin, JING Xiabin. Synthesis and Characterization of Retardant Polyurethanes Based on Polylactide[J]. Chinese Journal of Applied Chemistry, 2016, 33(1): 47-52.

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Synthesis and Characterization of Retardant Polyurethanes Based on Polylactide

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