AN Siyuan, ZHU Jingying, LU Diannan, et al. Lipase-catalyzed synthesis and characterization of high-molecular-weight PBS[J]. CIESC Journal, 2013, (5): 1855-1861.
AN Siyuan, ZHU Jingying, LU Diannan, et al. Lipase-catalyzed synthesis and characterization of high-molecular-weight PBS[J]. CIESC Journal, 2013, (5): 1855-1861.DOI: 10.3969/j.issn.0438-1157.2013.05.048.
high-molecular-weight PBS was synthesized by using immobilized Candida antarctica lipase B(Novozym-435)as catalyst and diethyl succinate and 1
4-butanediol as reagents.The PBS with molecular weight of 44000 was synthesized after 25 h polymerization at 95℃ and 10 mmHg vacuum
which was the highest molecular weight of PBS synthesized by the enzymatic method reported so far.The structure of polyester was determined by IR
NMR and elemental analysis.Enzymatic kinetics of PBS synthesis was monitored and the stability of lipase was investigated.In addition
thermal stability and biodegradable ability of blended polymer materials of enzyme-catalyzed polyester and chemical-catalyzed polyester were also investigated
displaying wonderful performance of synthesized PBS in the field of food and medical application.