Investigation on PLLA Ring-opening Precipitation Polymerization in Supercritical CO_2

1、

Catalyst system for ring-opening polymerization of epoxide

环氧化物开环聚合催化体系概述

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2、

FTIR results show that the glycosidation reaction is accompanied by ring-opening reaction and degradation reaction.

FTIR谱图表明，淀粉与十二醇进行了苷化反应生成淀粉十二烷基苷，同时还发生了降解反应、开环反应。

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3、

A study on ring-opening polymerization of TPDC induced by laser ablated metal nanoparticles

激光烧蚀金属纳米粒子致TPDC开环聚合反应的研究

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4、

Studies on ring-opening metathesis polymerization of dicyclopentadiene and properties of synthesized polymers

双环戊二烯开环歧化聚合反应及合成聚合物性能研究

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5、

Catalytic Ring-Opening Polymerization of Cycloalkenes by Mo ( CO)_6 System

六羰基钼体系催化环烯的开环聚合

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6、

Ring-opening Reaction on Epoxy-activated Resin

环氧基活化凝胶的开环反应

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7、

Ring-Opening Polymerization Kinetics of Ethylene Oxide and Propylene Oxide

环氧乙烷环氧丙烷开环聚合反应动力学研究

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8、

Theoretical Study on the Ring-opening Reaction Mechanism of Two Monocycle-β-lactam Antibiotics under Basic Conditions

碱性条件下两种单环β-内酰胺抗生素开环反应机理的理论研究

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9、

Study on Preparation and Property of Nylon 6/ Montmorillonite Hybrid Composites by Anionic Ring-opening Polymerization

阴离子开环聚合制备尼龙6/蒙脱土复合材料及其性能研究

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10、

Kinetics and mechanism of ring-opening polymerization of epichlorohydrin in the presence of rare earth coordination catalyst system

稀土络合催化环氧氯丙烷开环聚合动力学及其反应机理的研究

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11、

High molecular weight PLA can be prepared by ring-opening polymerization of lactides.

高分子量的聚丙交酯主要由丙交酯开环聚合制备。

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12、

METHODS Under specified temperature and press, adopt coordination-insertion mechanisms by a ring-opening polymerization process.

方法：在一定的温度和压力下，采用配位-插入聚合法通过交酯开环合成聚乳酸-乙醇酸共聚物缓释材料。

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13、

Study on Mechanism and Kinetics for Ring-Opening Polymerization of Cyclosiloxane in the Presence of Water

有水条件下环硅氧烷开环聚合机理及动力学研究

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14、

Study of Reaction Conditions and End-blocking Agent in D_4 Ring-opening Polymerization

D4乳液聚合反应条件及封端剂的研究

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15、

Study and application of ring-opening POLYMERIED phenolic basis frictional material

开环聚合酚醛树脂基复合摩阻材料的研究及应用

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16、

Ring-opening Polymerization of Aliphatic Cyclic Esters by Using Organic Amino Calcium Catalyst

有机氨钙催化聚合脂肪族环酯

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17、

Progress in the Study of Phenolic resin using Ring-opening Polymerization of Benzoxazines

开环聚合酚醛树脂研究进展

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18、

However, the anomalies of moderately strong earthquake ′ s field precursors are short-term, negative ones with obvious amplitude, and show pulse bound, high value rising within short time, step-like change, and the regularity of yearly variation is broken.

而中强震场兆异常，一般表现为幅度明显的短期内的负异常、脉冲突跳、短期内的高值上升、阶变及年变化规律被打破等；

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19、

Through controlling the rapid deformation of the piezoelectric element, we can control the inertial force, which causes a controlled step-like movement of some nanometers up to some ten-micrometers.

通过控制压电陶瓷的急速变形，可以控制惯性力的大小，从而控制从几纳米到几十微米的步进运动。

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20、

The R-T curves and the I-V curves of the sample were measured with standard four-probe method. Step-like structures were observed in the I-V curves of the sample.

采用四引线法测量了该结构的RT曲线和固定温度下的IV曲线，发现其IV曲线呈现多个台阶结构，台阶的数量和位置都随温度变化而变化。

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