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32. Influence of annealing on structure of poly(aryl ether ether ketone ketone) revealed by SAXS. Liu TX, Mo ZS, Zhang HF, Li G. JOURNAL OF APPLIED POLYMER SCIENCE 69 (9): 1829-1835 AUG 29 1998.
Structural studies of poly(aryl ether ether ketone ketone) (PEEKK) using small-angle X-ray scattering and one-dimensional electron density correlation function methods revealed that its aggregated state structure was significantly influenced by the annealing temperature. The long period L, the average thickness of the lamellae d, the electron density difference between the crystalline and amorphou...
http://www.polymer.cnt//ss/liutianxi/publicationsshow_155.html |
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30. Crystal structure and drawing-induced polymorphism in poly(aryl ether ether ketone). IV. Liu TX, Wang SE, Mo ZS, Zhang HF. JOURNAL OF APPLIED POLYMER SCIENCE 73 (2): 237-243 JUL 11 1999.
A new crystal modification induced by strain and denoted as form II exists alongside the dominant form I structure in the uniaxially oriented poly(ether ether ketone) (PEEK) and the related polymers. The crystal structure of form II for PEEK is also found to possess a two-chain orthorhombic packing with unit cell parameters of a equal to 0.475 nm, b equal to 1.060 nm, and c equal to 1.086 nm. More...
http://www.polymer.cnt//ss/liutianxi/publicationsshow_152.html |
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25. Micro- and nanomorphologies of isotactic polystyrene revealed by PLM, AFM, and TEM. Liu TX*, Ma KX, Liu ZH, He CB, Chung TS. JOURNAL OF APPLIED POLYMER SCIENCE 86 (2): 422-427 OCT 10 2002.
The spherulitic and lamellar morphologies of isotactic polystyrene (iPS) isothermally crystallized from the glassy state were investigated by polarized light microscopy (PLM), atomic force microscopy (AFM), and transmission electron microscopy (TEM). The AFM phase images and TEM bright-field electron micrographs revealed that the iPS spherulites consist of a number of dominant edge-on lamellae whi...
http://www.polymer.cnt//ss/liutianxi/publicationsshow_144.html |
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14. Morphology and fracture behavior of intercalated epoxy/clay nanocomposites. Liu TX*, Tjiu WC, Tong YJ, He CB, Goh SS, Chung TS. JOURNAL OF APPLIED POLYMER SCIENCE 94 (3): 1236-1244 NOV 5 2004.
Epoxy/clay nanocomposites were prepared by swelling organoclay in an epoxy resin, diglycidyl ether of bisphenol A, followed by curing with an aromatic hardener, diethyltoluenediamine. A combination of X-ray diffraction with transmission electron microscopy showed the coexistence of intercalated and exfoliated clay morphologies throughout the matrix. In addition, a microscopic and homogeneous dispe...
http://www.polymer.cnt//ss/liutianxi/publicationsshow_128.html |
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6. A processing-induced clay dispersion and its effect on the structure and properties of polyamide 6. Liu TX*, Tjiu WC, He CB, Na SS, Chung TS. POLYMER INTERNATIONAL 53 (4): 392-399 APR 2004.
The nanostructures and morphologies of polyamide 6 (PA6)/organoclay nanocomposites prepared by melt compounding have been studied by using X-ray diffiraction (XRD) and transmission electron microscopy (TEM). A combination of XRD and TEM indicates that an exfoliated clay morphology dominates at low clay loadings (less than or equal to5wt%) and a mixture of intercalated and exfoliated structures exi...
http://www.polymer.cnt//ss/liutianxi/publicationsshow_116.html |
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5. Polymer nanocomposites using urchin-shaped carbon nanotube-silica hybrids as reinforcing fillers. Zhang WD*, Phang IY, Shen L, Chow SY, Liu TX*. MACROMOL. RAPID COMMUN. 25 (21): 1860-1864, 2004.
Carbon nanotubes (CNTs) have been grown on MCM-41 supported Fe nanoparticles and the as-prepared (no further purification) CNT-silica hybrid was directly incorporated into nylon-6 (PA6) by simple melt-compounding. The urchin-shaped CNT-silica hybrid filler was observed to be homogeneously dispersed throughout the matrix by scanning 1 electron and transmission electron microscopy. Compared with nea...
http://www.polymer.cnt//ss/liutianxi/publicationsshow_115.html |
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生物可降解的氧化锌纳米载体：体外酸度控制阿霉素释放
关键字：Zn0@ polymer-DOX，细胞毒性，药物释放
本文采用两步共聚法合成了荧光颜色可调的水溶性Zn0@ polymer核壳结构量子点并用于阿霉素的载药和释放。直径为3 nm的Zn0@ polymer可以负载DOX形成Zn0@ polymer- DOX纳米复合物。Zn0@polymer的水溶液在紫外灯照射下的荧光为绿色，其量子产率接近40%。而Zn0@ polymer-DOX水溶液的紫外吸收光谱及荧光光谱表现出了二者的混合特征，说明纳米晶体混合物中的Zn0@ polyme...
http://www.polymer.cn/research/sy_info15494 |
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兼备生物成像和载药释放功能的Zn0@polymer发光纳米粒子
关键字：氧化锌，发光量子点，生物成像，载药释放
本文采用两步聚合法原位合成了Zn0@ polymer核壳型发光纳米粒子。这种新材料不仅有优秀的发光性能和稳定性，而且有良好的生物兼容性。我们将其应用于细胞成像和载药释放的研究，证明Zn0能够在癌细胞弱酸性环境中分解释放抗癌药物并增强药物的疗效。
http://www.polymer.cn/research/sy_info15383 |
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Proof of the identity between the depletion layer thickness and half the average span for an arbitrary polymer chain
关键字：平均跨度，耗散层厚度，体积排除效应，刚性平面
The confinement analysis from bulk structure (CABS) approach [Y. Wang et al., J. Chem. Phys. 128, 124904 (2008)] is extended to determine the depletion profiles of dilute polymer solutions confined to a slit or near an inert wall. We show that the entire spatial density distributions of any reference point in the polymer chain (such as the center of mass, middle segment, and end segments) can be c...
http://www.polymer.cn/research/sy_info15089 |
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生物可降解的氧化锌纳米载体：体外酸度控制阿霉素释放
关键字：Zn0@ polymer-DOX，细胞毒性，药物释放
本文采用两步共聚法合成了荧光颜色可调的水溶性Zn0@ polymer核壳结构量子点并用于阿霉素的载药和释放。直径为3 nm的Zn0@ polymer可以负载DOX形成Zn0@ polymer- DOX纳米复合物。Zn0@polymer的水溶液在紫外灯照射下的荧光为绿色，其量子产率接近40%。而Zn0@ polymer-DOX水溶液的紫外吸收光谱及荧光光谱表现出了二者的混合特征，说明纳米晶体混合物中的Zn0@ polyme...
http://www.polymer.cn/research/dis_info17479 |
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