Citation: 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. doi: 10.11944/j.issn.1000-0518.2016.01.150174 shu

Synthesis and Characterization of Retardant Polyurethanes Based on Polylactide

1.
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Corresponding author: YANG Lixin, JING Xiabin,
Received Date: 18 May 2015
Available Online: 28 September 2015
Fund Project:

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%.
- brominated flame retardant,
- polylactide,
- polyurethane
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沈阳化工大学材料科学与工程学院沈阳 110142