私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

當前位置:群英聚首 > 論文著作 > 正文
Investigation on the properties of methoxy poly(ethylene
來源:鄧聯東副教授個人網站 發布日期:2009-09-10
作者:LIANDONG DENG, HAIYING QI, CHUNMEI YAO, MENGHUANG FENG, ANJIE DONG
關鍵字:Chitosan; methoxy poly(ethylene glycol); graft co-polymers; nanoparticles; hydrodynamic behavior
論文來源:期刊

Methoxy poly(ethylene glycol)/chitosan graft co-polymers (CS-g-mPEGs) with different
degrees of substitution were synthesized by reductive N-alkylation of chitosan with poly(ethylene
glycol) aldehyde. The crystalline and thermal properties of CS-g-mPEGs were characterized by
wide-angle X-ray diffraction (XRD), differential scanning calorimetry (DSC) and thermogravimetry
(TG). The results indicate that CS-g-mPEG solids represent microphase separation morphology with
mPEG crystal and CS domains coexistence and the introduction of PEG on CS improves the thermal
decomposition. The hydrodynamic behavior of CS-g-mPEGs in aqueous solution and the influence
of NaCl were investigated. The results indicate that the hydrodynamic behavior of CS-g-mPEGs in
aqueous solution is significantly affected by the degree of substitution and the concentration of NaCl,
which are quite different from that of CS. The results of this paper also certify that CS-g-mPEGs
keep the property of complexation with a counter-ion, such as tripolyphosphate, to form nanoparticles
through the electrostatic interaction.

Copyright © 2005 Polymer.cn All rights reserved
中國聚合物網 版權所有
經營性網站備案信息

京公網安備11010502032929號

工商備案公示信息

京ICP證050801號

京ICP備12003651號

主站蜘蛛池模板: 芜湖县| 贡山| 延津县| 泰安市| 台中县| 越西县| 政和县| 高雄市| 灵璧县| 延安市| 启东市| 湖口县| 双柏县| 且末县| 黔江区| 花莲市| 万全县| 青田县| 建宁县| 台江县| 新疆| 莱芜市| 清新县| 延安市| 仁寿县| 贞丰县| 个旧市| 陆丰市| 冷水江市| 洪雅县| 铁岭市| 天祝| 麻栗坡县| 水城县| 冷水江市| 鸡西市| 平山县| 剑川县| 奉贤区| 乌恰县| 吴川市|