以L-乳酸单体为原料,熔融-固相缩聚法合成了聚乳酸,重点研究了固相聚合的工艺条件.结果表明,绝对压力60Pa,氯化亚锡为催化剂,分段控温,可使聚乳酸的粘均分子量提高到固相聚合反应前的5.3倍.通过对固相聚合产物的结晶度和熔点的分析,探讨了固相聚合的机理.
参考文献
| [1] | 麦杭珍,赵耀明,聂凤明.可生物降解聚乳酸纤维的纺丝成形研究进展[J].合成纤维工业,2000(04):43-45,49. |
| [2] | 俞昊;张瑜;朱美芳 等.生物可降解聚酯纤维进展[J].合成纤维,1999,28(02):33. |
| [3] | H R Kricheldorf .Syntheses and application of polylactid es[J].Chemosphere,2001,43:49. |
| [4] | M Ajioka;K.Enomoto;A.Yamaguchi .Basic properties of poly lactic acid produced by the direct condensation polymerization of lactic acid[J].Bulletin of the Chemical Society of Japan,1995,68:2125. |
| [5] | 王征,王婷,赵学明.直接缩合法合成聚乳酸[J].天津大学学报,2000(01):48-50. |
| [6] | 王征,王婷,赵学明.直接缩合法合成低分子量聚乳酸的研究[J].离子交换与吸附,2000(04):311-317. |
| [7] | 赵耀明,张军,麦杭珍.直接缩聚法合成聚乳酸的研究[J].合成纤维,2001(03):3-5,8. |
| [8] | S I Moon;C.W.Lee;M.Miyamoto .Melt polycondensat ion of 1-lactic acid with Sn(Ⅱ catalysts activated by various proton acids:A direct manufacturing route to high weight poly(L-lactic acid)[J].Journal of Polymer Science Part A:Polymer Chemistry,2000,38(09):1673. |
| [9] | S.-I.Moon;I.Taniguchi;M.Miyamoto;Y.Kimura .Melt/soldi polycondensation of L-lactic acid:an alternative route to poly(L-lactic acid0 with high molecular weight[J].Polymer: The International Journal for the Science and Technology of Polymers,2001(11):5059-5062. |
| [10] | 赵耀明,麦杭珍,陈军武,高茜斐.生物降解材料--聚丙交酯合成的研究[J].华南理工大学学报（自然科学版）,2000(10):53-58. |
| [11] | A Schindler;D.Harper .Polylactide em dash 2.Viscosity-molecular weight relationships and unperturbed chain dimensions[J].Journal of Polymer Science Part A:Polymer Chemistry,1979,17(08):2593. |
| [12] | H J Liu;C.T.Hsieh;D.S.G Hu .Solute diffusion through degradable semicrystalline polyethylene glycol/poly(L-lactide) copolymers[J].Polymer Bulletin,1994,32(04):463. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%