未漂硫酸盐针叶木浆漆酶催化交联的研究(Ⅰ)——松柏醇葡萄糖苷与未漂浆的反应机理  

Study on Crosslinking of Unbleached Softwood KP Catalyzed by Laccase(Ⅰ)——Mechanism of Reaction of Coniferin with Unbleached KP

作　　者：王鹏 谢益民[2] 范建云 

机构地区：[1]莆田市产品质量监督检验所,福建莆田351100 [2]山东轻工业学院制浆造纸科学与技术省部共建教育部重点实验室,山东济南250353

出　　处：《造纸科学与技术》2009年第3期1-6,10,共7页Paper Science & Technology

基　　金：国家自然科学基金项目(20674046);福建省自然科学基金项目(2008J0307);福建省青年科技人才创新资助项目(2007F3122)

摘　　要：采用红外光谱和高分辨率CP/MAS13C-NMR研究了松柏醇葡萄糖苷与未漂硫酸盐针叶木浆在漆酶体系作用下的聚合反应机理。结果表明:在漆酶体系作用下,松柏醇葡萄糖苷能够与未漂硫酸盐浆发生聚合反应,生成脱氢聚合物(Dehydrogenation Polymer,DHP)及DHP-碳水化合物复合体。DHP结构单元之间主要通过β-O-4、β-β和β-5方式相连接;DHP与碳水化合物之间是通过苯甲酯键和苯甲醚键相连。这些结果也表明,纤维之间除了氢键连接外,还可以通过DHP及DHP-碳水化合物复合体型式连接起来,从而提高纸张的湿强度。The mechanism of polymeric reaction between coniferin and unbleached softwood KP in existence of laccase system was investigated through IR and CP/MAS ^13C -NMR. It was found that Dehydrogenation Polymer （DHP） and DHP- Carbohydrate Complexes were prepared through polymeric reaction between coniferin and un- bleached KP with laccase system. The structure units of DHP was connected by β - O -4, β - β and β -5 structures. Furthermore, DHP was linked with carbohydrate by benzyl ether linkages and ester bonds. These results also showed that fibers of unbleached KP were linked each other through DHP and DHP - Carbohydrate Complexes besides hydrogen bonds so that wet strength of paper was enhanced.

关 键 词：松柏醇葡萄糖苷 漆酶 未漂硫酸盐浆 DHP DHP-碳水化合物复合体 

分 类 号：TS743.1[轻工技术与工程—制浆造纸工程]