Molecular characterization of biodegradable natural resin acid-substituted polycaprolactone

被引：19
|
作者：
Yuan, Liang [2 ]
Hamidi, Nasrollah [1 ]
Smith, Shaleesh [1 ]
Clemons, Felicia [1 ]
Hamidi, Amid [1 ]
Tang, Chuanbing [2 ]
机构：
[1] South Carolina State Univ, Dept Biol & Phys Sci, Orangeburg, SC 29115 USA
[2] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA
来源：
EUROPEAN POLYMER JOURNAL | 2015年 / 62卷
基金：
美国国家科学基金会;
关键词：
Renewable polymer; Natural resources; Conformation; Rosin; LIGHT-SCATTERING; CONTROLLED POLYMERIZATION; INTRINSIC-VISCOSITY; BLOCK-COPOLYMERS; DRUG-DELIVERY; POLYMERS; CHAIN; ROSIN; POLYSTYRENE; DIMENSIONS;
D O I：
10.1016/j.eurpolymj.2014.10.023
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Renewable resin acid-substituted polycaprolactone is prepared for characterization of physical properties of polymers. Six samples of dehydroabietic acid-substituted polycaprolactone (PCL-g-DAPE) with various molecular weight were synthesized by a combination of ring-opening polymerization and click chemistry. These polymers were characterized by on-line two angle light scattering and differential pressure viscosity. The values of dn/dc, average molecular weight, intrinsic viscosity, hydrodynamic radius, and radius of gyration were determined. Mark-Houwink double logarithmic relations of intrinsic viscosity and weight average molecular weight as well as Stockmayer-Fixman plots were established to scale the dimensions and conformation of PCL-g-DAPE chains related to their molar mass. The results indicated that PCL-g-DAPE is a flexible-coil polymer, similar to poly(methyl acrylate). Such properties were somewhat unexpected, considering the bulky group in the polymer side chains. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：43 / 50
页数：8
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