Novel suberin‐based biopolyesters: From synthesis to properties

This article reports the successful synthesis and characterization of two types of completely biobased polymers prepared by the polycondensation or polytransesterification of suberin fragments, isolated by different procedures and from two different vegetable sources. These polymerizations were conducted with different experimental conditions in terms of the type of catalyst, the reaction medium and temperature, as well as the molar ratio between the reactive moieties. The ensuing linear or partly crosslinked polyesters were characterized by conventional spectroscopic techniques, SEC, DSC, XRD, DMA, and TGA. These hydrophobic materials represent an original contribution to the growing field of polymers from renewable resources. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011     

Bark Suberin as a Renewable Source of Long-Chain ω-Hydroxyalkanoic Acids

Summary : Polycondensations of cis-9,10-epoxy-18-hydroxyoctadecanoic acid, isolated from birch outer bark, were performed at 75 °C in toluene as solvent and at 85 °C in bulk using immobilized Candida antarctica lipase B as catalyst. The polycondensation performed in toluene in presence of molecular sieves gave a polyester with DP 50 after 24 h. The same DP was obtained at much shorter reaction time (3 h) by bulk polymerization in an open vial without any drying agent present.     

基于软木脂的高分子材料 Ⅱ.软木脂的功能与应用

软木脂在植物中的主要功能是作为屏蔽物,外在以及内在的许多因素可以引起细胞栓化,有软木脂存在的栓化细胞壁减少了病菌和其它外界恶劣环境对植物的影响。软木脂在根系吸收、膳食纤维、防腐、化妆品等许多方面发挥了重要的作用。文章是《基于软木脂的高分子材料Ⅰ》的续篇,主要综述有关软木脂的功能与应用。     

基于软木脂的高分子材料 Ⅰ.软木脂的来源、合成、结构与性能

对近年来软木脂的高分子材料的研究进展进行了综述,涉及软木脂高分子材料的来源、合成、结构及性能等。