| 刘飞跃,胡青英,周志会,顾贞雨.木质素与异氰酸酯基聚丙烯酸酯的接枝共聚研究[J].井冈山大学自然版,2016,(1):34-39 |
| 木质素与异氰酸酯基聚丙烯酸酯的接枝共聚研究 |
| GRAFTING AND COPOLYMERIZATION BETWEEN LIGNIN AND POLYACRYLATE WITH ISOCYANATE GROUP |
| 投稿时间：2015-11-11 修订日期：2015-12-12 |
| DOI：10.3969/j.issn.1674-8085.2016.01.008 |
| 中文关键词: 接枝共聚物 大分子反应 木质素 聚丙烯酸酯 异氰酸酯 |
| 英文关键词: graft copolymer macromolecular reaction lignin polyacrylate isocyanate |
| 基金项目:国家自然科学基金项目(51363010) |
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| 摘要点击次数: 10257 |
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| 中文摘要: |
| 制备木质素的接枝共聚物是利用木质素的有效途径之一。采用大分子接枝反应方式制备了木质素-丙烯酸酯接枝共聚物,研究反应物分子量与接枝反应概率、接枝共聚物的分子结构之间的关系。结果表明:丙烯酸酯共聚物的接枝接近完全;木质素参与反应的概率与分子量有关,高分子量者最高,低分子量者次之,中等分子量者最低;低分子量木质素与聚丙烯酸酯形成以聚丙烯酸酯为主链的悬挂式接枝共聚物,较高分子量木质素则与聚丙烯酸酯形成以木质素为核的包覆式接枝共聚物,两者往往共存于同一接枝分子中;接枝产物中基本不存在交联结构。 |
| 英文摘要: |
| It is interesting to prepare lignin graft copolymers in the utilization of the renewable resource. A new lignin-polyacrylate graft copolymer between lignin and polyacrylate with isocyanate is prepared by macromolecular grafting reaction method. The relationships between molecular weight of reactants and grafting reaction probability, molecular structure of graft copolymer are investigated. It is found that nearly all polyacrylate completely reacts; high molecular lignin's reaction probability is the highest, the medium for low molecular lignin, while the lowest for medium molecular lignin. The graft copolymer of polyacrylate and low molecular lignin is pendent structural, that of polyacrylate and high molecular lignin is core-shell structural. Most of graft molecules are the complexes of the two structures. No crosslinking is found in the graft product. |
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