位置：成果数据库 > 期刊 > 期刊详情页
聚甲基丙烯酸甲酯/镓纳米复合物的动力学弛豫行为
  • ISSN号：1000-3290
  • 期刊名称：《物理学报》
  • 时间：0
  • 分类：O632.52[理学—高分子化学;理学—化学]
  • 作者机构：[1]中国科学院固体物理研究所,中国科学院材料物理重点实验室,合肥230031
  • 相关基金：国家自然科学基金（批准号：50803066 10874182和10674135）资助的课题
作者： 周学懋[1], 陈晓萌[1], 吴学邦[1], 水嘉鹏[1], 朱震刚[1]
关键词： 相对能量耗散, 玻璃化转变, 力学弛豫, relative energy dissipation, glass transition, mechanical relaxation
中文摘要：

通过原位自由基聚合方法制备了聚甲基丙烯酸甲酯（PMMA）以及含镓（Ga）质量分数为11.3%和13.5%的PMMA/Ga纳米复合材料.在玻璃化转变温度及以上温区,利用能量耗散技术研究PMMA/Ga纳米复合物的动力学弛豫行为,发现随着Ga含量的增加,复合物的α弛豫峰移向高温但峰高降低.此外,还定量研究了Ga含量对PMMA/Ga复合物的α′弛豫的影响,并作出了相应的解释.

英文摘要：

Two kinds of poly（methyl methacrylate） /gallium （ PMMA /Ga） nanocomposites with different Ga contents （11. 3% and 13. 5% ） were prepared by free radical polymerization. The relaxation dynamics of PMMA /Ga nanocomposite above the glass transition temperature has been investigated by mechanical spectroscopy. It was found that the peak temperatures of α relaxation of the nanocomposites increase with the increasing Ga content,but the peak heights of α relaxation decrease. Besides,the composition-dependent dynamics of the α′ relaxation in PMMA /Ga nanocomposites was also studied.

同期刊论文项目
高聚物熔体的液－液转变及其物理机制研究
期刊论文 15 会议论文 2
用液态内耗技术研究聚合物浓溶液的构象转变
期刊论文 15 会议论文 2
“复杂”熔体输运性质与过剩熵的关系研究
期刊论文 29
同项目期刊论文
不同一级相变材料的内耗峰形成机制
Gelation of mixed PEO-PPO-PEO copolymers in aqueous solution via mechanical spectroscopy
力学谱技术在聚合物流体结构转变过程中的研究进展
Nature of the Sub-Rouse Modes in the Glass-Rubber Transition Zone of Amorphous Polymers
Phase diagram of the Pluronic L64-H(2)O micellar system from mechanical spectroscopy
Dynamic relaxation behaviors of poly( methyl methacrylate)/Ga nanocomposites
Longer-scale segmental dynamics of amorphous poly(ethylene oxide)/poly(vinyl acetate) blends in the
Dynamic Crossover of alpha ' Relaxation in Poly(vinyl acetate) above Glass Transition via Mechanical
Slow dynamics of the alpha and alpha(') relaxation processes in poly(methyl methacrylate) through th
颗粒物质在微剪切振动下的能量耗散研究
Mechanical relaxation studies of alpha and slow beta processes in Nd(65)Fe(15)Co(10)Al(10) bulk meta
Diffusion activation energy versus the favourable energy in two-order-parameter model- A molecular dynamics study of liquid Al
Local atomic and electronic structures of equiatomic liquid alloy KSb from 923 to 1773 K
Ab initio molecular dynamics simulations on the structural change of liquid eutectic alloy Si15Te85
Ab initio molecular dynamics simulations on structural change of liquid eutectic alloy Ge15Te85 from
Dynamic Crossover of alpha ' Relaxation in Poly ( vinyl acetate ) above Glass Transition via Mechani
First principle study of structural, phase stabilization and oxygen-ion diffusion properties of beta
Slow dynamics of the alpha and alpha(') relaxation processes in poly ( methyl methacrylate ) through
Low-frequency internal friction study on the structural changes in polymer melts
Characterization of reflection intermittency in a composite granular chain
Molecular dynamics simulations of liquid phosphorus at high temperature and pressure
Low-frequency mechanical spectroscopy study of conformational transition of polymer chains in concen
Composition - dependent damping and relaxation dynamics in miscible polymer blends above glass trans
Effects of molecular weight on the liquid - liquid transition in polystyrene melts studied by low -
Two-order-parameter description of liquid Al under five different pressures
Investigation of copolymer - micellar system EO37PO56EO37 by low - frequency internal friction
第6届液体和软物质物理学术会议简讯
Experimental evidence of the transformation from microheterogeneous to microhomogeneous states in Ga
Measurement of the dynamic Young's modulus of porous titanium and Ti6Al4V
Effects of polyethylene oxide on the dynamics of the alpha and alpha ' relaxations observed in polys
Crossover in the power-law behavior of confined energy in a composite granular chain
Oxygen-ion arrangements and concerted motion in beta-La2Mo2O9
Dynamics of PEO - PPO - PEO triblock copolymer in aqueous solutions investigated by internal frictio
钼酸镧氧离子导体结构与扩散性质的分子动力学研究
一维复合颗粒链中能量衰减的动力学分析
氧离子导体La2MO2-xMxO9(M=Cr,W)的理论研究
在玻璃转变温度及其以上温区聚苯乙烯／聚氧化乙烯共混物的动力学弛豫行为
氧离子导体β-La2Mo2O9结构性质的第一性原理研究
Diffusion activation energy versus the favourable energy in two-order-parameter model- A molecular dynamics study of liquid Al
钴和铁熔体短程序的分子动力学模拟研究
聚醋酸乙烯酯熔体的力学谱
颗粒物质在微剪切振动下的能量耗散研究
Diffusion activation energy versus the favourable energy in two-order-parameter model- A molecular dynamics study of liquid Al
Relationship of glass forming ability and local structural properties of liquid Cu-Zr alloys
期刊信息
  • 《物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京603信箱(中国科学院物理研究所)
  • 邮编：100190
  • 邮箱：apsoffice@iphy.ac.cn
  • 电话：010-82649026
  • 国际标准刊号：ISSN：1000-3290
  • 国内统一刊号：ISSN：11-1958/O4
  • 邮发代号:2-425
  • 获奖情况:
  • 1999年首届国家期刊奖,2000年中科院优秀期刊特等奖,2001年科技期刊最高方阵队双高期刊居中国期刊第12位
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国科学引文索引（扩展库）,英国科学文摘数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:49876