title: [Preparation and degradation behavior of PELGE nanoparticles].
abstract: A series of poly (lacticacid-co-glycolicacid)-poly(ethylene glycol) (PLGA-PEG, PELGA) block copolymers and poly (ethylene glycol)-poly (lacticacid-co-glycolicacid)-poly (ethylene-glycol) (PELGE) was synthesized by ring-opening polymerization. PELGA nanoparticles and PELGE nanoparticles were prepared using the emulsion-solvent evaporation technique (O/W). To study the behavior and mechanism of the degradation of PELGA-NP and PELGA-NP, we determined the lactic acids by UV spectrophotometry. The method confirmed that degradation was much faster for polymers with a decrease in the LA content of the polymers or an increase in the PEG content of the polymers.
authors.affiliation: West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
authors.forename: Yourong
authors.initials: Y
authors.lastname: Duan
authors.forename: Zhirong
authors.initials: Z
authors.lastname: Zhang
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Tang
authors.forename: Yunzhu
authors.initials: Y
authors.lastname: Lin
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry; D001673:Biodegradation, Environmental; D004337:Drug Carriers; D016503:Drug Delivery Systems; D006801:Humans; D019344:Lactic Acid / Q000138:chemical synthesis / Q000737:chemistry*; D008863:Microspheres; D049329:Nanostructures; D036103:Nanotechnology; D011091:Polyesters / Q000138:chemical synthesis / Q000737:chemistry; D011092:Polyethylene Glycols / Q000138:chemical synthesis / Q000737:chemistry*; D011098:Polyglactin 910 / Q000737:chemistry; D011100:Polyglycolic Acid / Q000138:chemical synthesis / Q000737:chemistry*; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D004337:Drug Carriers; D011091:Polyesters; D011108:Polymers; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D011098:Polyglactin 910; D011092:Polyethylene Glycols; C028210:monomethoxypolyethylene glycol