连续微波辐射法合成聚D,L-乳酸
Synthesis of Poly(D,L-Lactide) Under Continuous Microwave Irradiation
查看参考文献10篇
文摘
|
采用微波辐射法,以D,L-丙交酯(DLLA)为单体开环聚合合成了聚D,L-乳酸(PDLLA).考察了催化剂种类和用量、微波辐射功率和时间对PDLLA相对分子质量的影响;用多角度激光散射仪、傅里叶变换红外光谱和核磁共振等技术对PDLLA进行了表征;并测定了反应过程中体系温度的变化.实验结果表明,以连续发射微波的改装微波炉为反应器,在Sn(Oct)_2催化剂用量0.56 %(以DLLA单体质量计)、辐射功率90 W、辐射时间10 min的条件下,合成的PDLLA的黏均相对分子质量为159.2 kg/mol,收率为81.8%.改装的微波炉可连续发射微波,体系升温迅速,温升过程平稳. |
其他语种文摘
|
Ring-opening polymerization of D,L-lactide(DLLA)was studied to synthesize poly(D,L-lactide)(PDLLA)by continuous microwave irradiation in a modified domestic microwave oven.Effects of catalyst types and dosage,microwave irradiation power and irradiation time on relative molecular mass of PDLLA were investigated.PDLLA was characterized by means of MALLS,FTIR and ~1H NMR.Temperature variation in the oven during reaction was measured to show advantage of continuous microwave irradiation.PDLLA with viscosity-average relative molecular mass of 159.2 kg/mol and yield of 81.8% could be obtained from DLLA under continuous microwave irradiation of 90 W for 10 min,with Sn(Oct)_2 as catalyst and its dosage 0.56%(mass fraction based on DLLA monomer mass).Due to non-interrupted emission of microwave,temperature of reaction system increased more rapidly in modified domestic microwave oven,which was preferable to the conventional one. |
来源
|
石油化工
,2009,38(8):861-865 【核心库】
|
关键词
|
连续微波辐射
;
开环聚合
;
D
;
L-丙交酯
;
聚D
;
L-乳酸
;
聚乳酸
|
地址
|
1.
哈尔滨工业大学,市政环境工程学院,绿色化学与技术研究中心, 黑龙江, 哈尔滨, 150090
2.
哈尔滨工业大学市政环境工程学院绿色化学与技术研究中心, 黑龙江, 哈尔滨, 150090
3.
中国科学院过程工程研究所, 北京, 100190
|
语种
|
中文 |
文献类型
|
研究性论文 |
ISSN
|
1000-8144 |
学科
|
化学工业 |
基金
|
黑龙江省哈尔滨市科技攻关项目
|
文献收藏号
|
CSCD:3692609
|
参考文献 共
10
共1页
|
1.
曹新鑫. 生物高分子聚乳酸的合成综述.
安徽化工,2008,34(1):9-12
|
被引
4
次
|
|
|
|
2.
王俊凤. 聚乳酸的合成研究进展.
化工时刊,2007,21(6):51-56
|
被引
4
次
|
|
|
|
3.
林陵. 微波法合成低聚合度多聚甲醛.
石油化工,2008,37(6):573-577
|
被引
2
次
|
|
|
|
4.
张科. 聚乳酸的微小辐射合成方法研究.
高分子材料科学与工程,2004,20(3):46-48
|
被引
22
次
|
|
|
|
5.
Shu Jing. Microwave-Irradiated Ring-Opening Polymerizationof D,L-Lactide Under Atmosphere.
Journal of Applied Polymer Science,2006,100(3):2244-2247
|
被引
8
次
|
|
|
|
6.
刘福萍. 微波有机合成及反应器的新进展.
辽宁化工,2004,33(2):92-95
|
被引
2
次
|
|
|
|
7.
Deng Xianmo. Polymeri-zation of Lactides and Lactones Ⅱ.Ring-Opening Polymerization of ε-Caprolactone and D,L-Lactide by Organoacid Rare Earth Compounds.
Journal of Applied Polymer Science,1999,71(12):1941-1948
|
被引
4
次
|
|
|
|
8.
Kricheldorf H R. Polylactones 48.SnOct_2-Initiated Polymerizations of Lactide:A Mechanistic Study.
Macromolecules,2000,33(3):702-709
|
被引
26
次
|
|
|
|
9.
Witzke D R. Reversible Kinetics and Thermodynamics of the Homopolymerization of L-Lactide with 2-Ethylhexanoic Acid Tin(Ⅱ) Salt.
MACROMOLECULES,1997,30(23):7075-7085
|
被引
13
次
|
|
|
|
10.
Schwach G. Ring Opening Polymerization of D,L-Lactide in the Presence of Zinc Metal and Zinc Lactate.
Polymer International,1998,46(3):177-182
|
被引
7
次
|
|
|
|
|