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Titolo:
Synthesis and characterization of novel biodegradable poly(carbonate-co-phosphate)s
Autore:
Wang, XL; Zhuo, RX; Liu, LJ;
Indirizzi:
Wuhan Univ, Dept Chem, State Educ Minist China, Lab Biomed Polymer, Wuhan 430072, Peoples R China Wuhan Univ Wuhan Peoples R China 430072 r, Wuhan 430072, Peoples R China
Titolo Testata:
POLYMER INTERNATIONAL
fascicolo: 11, volume: 50, anno: 2001,
pagine: 1175 - 1179
SICI:
0959-8103(200111)50:11<1175:SACONB>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
CYCLIC CARBONATES; POLYMERIZATION; RELEASE;
Keywords:
poly(carbonate-co-phosphate)s; ring-opening polymerization; polymerizability; hydrophilicity; degradation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Zhuo, RX Wuhan Univ, Dept Chem, State Educ Minist China, Lab Biomed Polymer, Wuhan 430072, Peoples R China Wuhan Univ Wuhan Peoples R China 430072 430072, Peoples R China
Citazione:
X.L. Wang et al., "Synthesis and characterization of novel biodegradable poly(carbonate-co-phosphate)s", POLYM INT, 50(11), 2001, pp. 1175-1179

Abstract

A series of aliphatic poly(carbonate-co-phosphate)s was synthesized in bulk using aluminium isopropoxide as initiator by ring-opening polymerization with various cyclic carbonates (trimethylene carbonate (TMC) and 5,5-dimethyltrimethylene carbonate (DTC)) and cyclic phosphates (ethylene ethyl phosphate (EEP), ethylene isobutyl phosphate (EIBP), ethylene lauryl phosphate (ELP) and ethylene stearyl phosphate (ESP)). The influence of reaction conditions such as polymerization time, polymerization temperature and initiatorconcentration on the yield and molecular weight were investigated. The substituent effect of the cyclic monomers on the polymerization was also studied, and the results indicate that the substituents exert a marked influenceon the molecular weight of the copolymers obtained. The comonomer reactivity ratios were determined (TMC 0.88 and EEP 1.17). The copolymers with backbone chains rich in phosphate content exhibit better hydrophilicity than that of TMC homopolymer, and the degradation rate of the copolymers increaseswith the increase of phosphate content therein. (C) 2001 Society of Chemical Industry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 14:25:32