Laser photolysis of carboxymethylated chitin derivatives in aqueous   solution. Part 2. Reaction of OH center dot and SO4 center dot- radicals   with carboxymethylated chitin derivatives

doi:10.1021/bm0342739

CORC > 北京大学 > 化学与分子工程学院

	Laser photolysis of carboxymethylated chitin derivatives in aqueous solution. Part 2. Reaction of OH center dot and SO4 center dot- radicals with carboxymethylated chitin derivatives
	Zhai, ML ; Kudoh, H ; Wach, RA ; Wu, GZ ; Lin, MZ ; Muroya, Y ; Katsumura, Y ; Zhao, L ; Nagasawa, N ; Yoshii, F
刊名	biomacromolecules
	2004
关键词	FLASH-PHOTOLYSIS PERSULFATE CHITOSAN
DOI	10.1021/bm0342739
英文摘要	The reactions of OH. or SO4.- radicals with carboxymethyl chitin (CM-chitin) and its deacetylated product, carboxymethyl chitosan (CM-chitosan), were investigated in aqueous solutions using a laser photolysis technique. The rate constants of the reactions of OH. and SO4.- radicals with CM-chitosan are always higher than those for CM-chitin, indicating that the amino-group could increase the reactivity of carboxymethylated chitin derivatives. The rate of the reactions of CM-chitin and CM-chitosan with OH. radical was found to decrease at lower pH when polymers chains tend to the coiled conformation. In comparison, the rate constant of the reaction of SO4.- radicals with CM-chitin or CM-chitosan decreased with pH, indicating that CM-chitin or CM-chitosan has a higher reactivity with the SO4.- radical at low pH due to the protonation of the amino group.; Biochemistry & Molecular Biology; Chemistry, Organic; Polymer Science; SCI(E); EI; 9; ARTICLE; 2; 458-462; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/151617]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhai, ML,Kudoh, H,Wach, RA,et al. Laser photolysis of carboxymethylated chitin derivatives in aqueous solution. Part 2. Reaction of OH center dot and SO4 center dot- radicals with carboxymethylated chitin derivatives[J]. biomacromolecules,2004.
APA	Zhai, ML.,Kudoh, H.,Wach, RA.,Wu, GZ.,Lin, MZ.,...&Yoshii, F.(2004).Laser photolysis of carboxymethylated chitin derivatives in aqueous solution. Part 2. Reaction of OH center dot and SO4 center dot- radicals with carboxymethylated chitin derivatives.biomacromolecules.
MLA	Zhai, ML,et al."Laser photolysis of carboxymethylated chitin derivatives in aqueous solution. Part 2. Reaction of OH center dot and SO4 center dot- radicals with carboxymethylated chitin derivatives".biomacromolecules (2004).