Studies on the V－Cu－S Heterometallic Cluster Compounds（2）．Crystal Structure of［VS_4（CuPPh_3）_5Br_2］·0．5CH_2Cl_2

ＳｔｕｄｉｅｓｏｎｔｈｅＶ－Ｃｕ－ＳＨｅｔｅｒｏｍｅｔａｌｌｉｃＣｌｕｓｔｅｒＣｏｍｐｏｕｎｄｓ（２）．ＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅｏｆ［ＶＳ_４（ＣｕＰＰｈ_３）_５Ｂｒ_２］·０．５ＣＨ_２Ｃｌ_２ＺｈｅｎｇＦａ－Ｋｕｎ；ＹｕＸｉｕ－Ｆｅｎ（Ｓｔａ...     

Studies on the Synthesis and Crystal Structure of 5－（3＇－methylphenyl）－2H－tetrazol－2－ylacetic acid

ＳｔｕｄｉｅｓｏｎｔｈｅＳｙｎｔｈｅｓｉｓａｎｄＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅｏｆ５－（３＇－ｍｅｔｈｙｌｐｈｅｎｙｌ）－２Ｈ－ｔｅｔｒａｚｏｌ－２－ｙｌａｃｅｔｉｃａｃｉｄＺＨＡＮＧＺｉ－ｙｉａｎｄＺＯＵＮｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍ...     

Deactivation of MgO／BaCO_3 Catalyst for Oxidative Coupling of Methane at Elevated Pressure—XPS Studies on the Changes of Surface Structure

ＤｅａｃｔｉｖａｔｉｏｎｏｆＭｇＯ／ＢａＣＯ３ＣａｔａｌｙｓｔｆｏｒＯｘｉｄａｔｉｖｅＣｏｕｐｌｉｎｇｏｆＭｅｔｈａｎｅａｔＥｌｅｖａｔｅｄＰｒｅｓｓｕｒｅ—ＸＰＳＳｔｕｄｉｅｓｏｎｔｈｅＣｈａｎｇｅｓｏｆＳｕｒｆａｃｅＳｔｒｕｃｔｕｒｅＬｉｕＹｕ，...     

Studies on the Mechanism of the Direct Synthesis of Styrene form Benzene and Ethylene

ＳｔｕｄｉｅｓｏｎｔｈｅＭｅｃｈａｎｉｓｍｏｆｔｈｅＤｉｒｅｃｔＳｙｎｔｈｅｓｉｓｏｆＳｔｙｒｅｎｅｆｏｒｍＢｅｎｚｅｎｅａｎｄＥｔｈｙｌｅｎｅＺＨＡＮＧＱｉａｎｇ，ＪＩＮＲｉ－ｇｕａｎｇ（ＣｏｌｌｅｇｅｏｆＭａｔｅｒ，Ｓｃｉ，ａｎｄＴｅｃｈ，Ｂｅｉ...     

Studies on the Stability of Four－membered Ring Chelates（Ⅳ）──Sulphur Coordinated Xanthate Complexes

ＳｔｕｄｉｅｓｏｎｔｈｅＳｔａｂｉｌｉｔｙｏｆＦｏｕｒ－ｍｅｍｂｅｒｅｄＲｉｎｇＣｈｅｌａｔｅｓ（Ⅳ）──ＳｕｌｐｈｕｒＣｏｏｒｄｉｎａｔｅｄＸａｎｔｈａｔｅＣｏｍｐｌｅｘｅｓＺＵＯＢｅｎ－ｃｈｅｎｇ；ＹＡＮＧＹｕｅ－ｈｕｉ；ＺＨＡＮＧＸｉａｏ－ｌｉ...     

Studies on the Binding of Tris(1,10-phenanthroline) Nickel(Ⅱ) to Calf Thymus DNA

ＳｔｕｄｉｅｓｏｎｔｈｅＢｉｎｄｉｎｇｏｆＴｒｉｓ（１，１０－ｐｈｅｎａｎｔｈｒｏｌｉｎｅ）Ｎｉｃｋｅｌ（Ⅱ）ｔｏＣａｌｆＴｈｙｍｕｓＤＮＡＪＩＮＬａｎ，ＹＡＮＧＰｉｎ．．ａｎｄＬＩＱｉｎｇ－ｓｈａｎ（ＳｔａｔｅＫｅｙＬａｂｏｒａｔｏｒｙｏｆＣｏｏｒ...     

Studies on the Steroids of Marine Sponge(Ⅳ)──Steroids from the Marine Spo

ＳｔｕｄｉｅｓｏｎｔｈｅＳｔｅｒｏｉｄｓｏｆＭａｒｉｎｅＳｐｏｎｇｅ（Ⅳ）──ＳｔｅｒｏｉｄｓｆｒｏｍｔｈｅＭａｒｉｎｅＳｐｏｎｇｅＢｉｅｍｎａＳｐ．ＺＥＮＧＺｈｉ，ＳＵＪｉｎｇ－ｙｕａｎｄＺＥＮＧＬｏｎｇ－ｍｅｉ（ＤｅｐａｒｔｎｉｅｎｔｏｆＣｈｅｍ...     

Studies on the Glycosides in the Leaves ofOplopanax elatus NAKAI(Ⅰ)

ＳｔｕｄｉｅｓｏｎｔｈｅＧｌｙｃｏｓｉｄｅｓｉｎｔｈｅＬｅａｖｅｓｏｆＯｐｌｏｐａｎａｘｅｌａｔｕｓＮＡＫＡＩ（Ⅰ）ＷＡＮＧＧｕａｎｇ－ｓｈｕ，ＺＨＡＯＣｈｕｎ－ｆａｎｇａｎｄＸＵＪｉｎｇ－ｄａ（ＢｅｔｈｕｎｅＵｎｉｖｅｒｓｉｔｙｏｆＭｅｄｉｃａｌＳ...     

Ab Initio Studies on the Structure and Binding Interaction of M~ CO_2(M=Sc,Ti…Zn)

ＡｂＩｎｉｔｉｏＳｔｕｄｉｅｓｏｎｔｈｅＳｔｒｕｃｔｕｒｅａｎｄＢｉｎｄｉｎｇＩｎｔｅｒａｃｔｉｏｎｏｆＭ＋ＣＯ２（Ｍ＝Ｓｃ,Ｔｉ…Ｚｎ）＊ＦＡＮＨｏｎｇ－Ｊｕｎ,ＺＨＯＮＧＳｈｉ－Ｊｕｎ,ＬＩＵＣｈｕｎ－Ｗａｎ＊＊（ＦｕｊｉａｎＩｎｓｔｉｔｕｔｅｏ...     

Chemical Studies on the Glycosides in the Leaves of Oplopanax Elatus Nakai(Ⅳ)

ＣｈｅｍｉｃａｌＳｔｕｄｉｅｓｏｎｔｈｅＧｌｙｃｏｓｉｄｅｓｉｎｔｈｅＬｅａｖｅｓｏｆＯｐｌｏｐａｎａｘＥｌａｔｕｓＮａｋａｉ（Ⅳ）＊ＷＡＮＧＧｕａｎｇ－ｓｈｕａｎｄＸＵＪｉｎｇ－ｄａ（ＮｏｒｍａｎＢｅｔｈｕｎｅＵｎｉｖｅｒｓｉｔｙｏｆＭｅｄｉｃａｌ...     

马来酸酐接枝聚丙烯的等温结晶动力学研究

用ＤＳＣ法追踪了马来酸酐接枝聚丙烯的等温结晶过程，讨论了马来酸酐降低聚丙烯球晶径向生长自由能，提高结晶速率，但降低聚丙烯结晶度的物理和化学机制．同时探讨了马来酸酐的接枝对球晶生长和成核机制的影响．     

聚β-羟基丁酸酯顺丁烯二酸酐接枝共聚物的研究

采用DSC、TGA、POM和WAXD等方法对聚 β 羟基丁酸酯 (PHB)及其接枝顺丁烯二酸酐共聚物 (PHB g MA)的结晶行为、热稳定性和生物降解特性进行了研究 .结果表明接枝产物的热稳定性明显优于PHB ,热分解温度提高了 2 0余度 ;结晶行为发生很大的变化 .结晶速率减小 ,结晶温度降低 ,冷结晶温度升高 ,球晶的织态结构也随着MA接枝量的变化发生明显变化 ,并且接枝MA促进了PHB的生物降解     

聚丙烯/聚(丙烯-g-马来酸酐)/蒙脱土纳米复合材料结晶动力学研究

非等温结晶动力学;聚丙烯/聚(丙烯-g-马来酸酐)/蒙脱土纳米复合材料结晶动力学研究     

Thermal and crystallization studies of short flax fibre reinforced polypropylene matrix composites: Effect of treatments

The effect of fibre treatments on thermal stability of flax fibre and crystallization of flax fibre/polypropylene composites was investigated. For thermal stability study, flax fibres have been treated using maleic anhydride, maleic anhydride polypropylene copolymer, vinyltrimethoxy silane and alkalization. In order to compare thermal stability of flax fibres thermogravimetry (TG) analysis has been used. Kinetic parameters have been determined by Kissinger method. Results showed that all treatments improved thermal stability of flax fibres. For crystallinity analysis, three different techniques have been used, differential scanning calorimetry analysis (DSC), pressure–volume–temperature (PVT) measurements for analysis of volume shrinkage and polarized optical microscopy (POM). All techniques results showed that addition of flax fibre increased crystallization rate. Besides, depending on fibre surface treatment and crystallization temperature, flax fibre/PP composites can show transcrystallinity.     

聚丙烯接枝马来酸酐及其离聚物的等温结晶行为

采用ＤＳＣ对马来酸酐接枝聚丙烯（ＰＰ ｇ ＭＡＨ）及其３种５个离聚物的等温结晶行为进行了研究,发现在相对结晶度２％～９０％的范围内符合Ａｖｒａｍｉ方程．马来酸酐的引入及离子化并不改变ＰＰ的结晶行为,但样品的结晶速率增大,同时结晶速率亦随中和度的提高而增大．从Ｈｏｆｍａｎ理论得到７个样品的垂直于晶核的界面自由能σｅ,其变化与Ａｖｒａｍｉ方程的结果是一致的．     

氧化钕填充聚丙烯的等温结晶动力学研究

用ＤＳＣ法研究了氧化钕微粉填充聚丙烯的等温结晶动力学．结果表明，加入少量氧化钕可明显提高聚丙烯的基体结晶速率和结晶度，降低球晶径向生长的单位面积表面自由能；从Ａｖｒａｍｉ和Ｈｏｆｆｍａｎ理论出发都可得出稀土氧化物Ｎｄ２Ｏ３填充聚丙烯后可明显改变聚丙烯的结晶行为．     

Crystallization kinetics of compatibilized blends of polypropylene and polyethylenimine

Journal of Thermal Analysis and Calorimetry - In this paper, isothermal and non-isothermal crystallization behaviour of neat polypropylene (PP), blends of PP/maleic anhydride grafted polypropylene...     

Effects of functionalized multiwalled carbon nanotubes on the morphologies and mechanical properties of PP/EVA blend

The maleic anhydride‐grafted multiwalled carbon nanotubes (MWCNTs‐g‐MA) have been introduced into polypropylene/ethylene‐co‐vinyl acetate (PP/EVA) blend. To clearly describe the effects of MWCNTs‐g‐MA on the morphology and mechanical properties of PP/EVA blends, the selective distribution of MWCNTs‐g‐MA in the blends is realized through different sample preparation methods, namely, MWCNTs‐g‐MA disperse in EVA phase and MWCNTs‐g‐MA disperse in PP matrix. The results show that the distribution of MWCNTs‐g‐MA has an important effect on the final morphology of EVA and the crystallization structure of PP matrix. Compared with PP/EVA binary blend, distribution of MWCNTs‐g‐MA in PP matrix induces the aggregation of EVA phase at high EVA content and the decrease of spherulite diameters of PP matrix simultaneously. However, when MWCNTs‐g‐MA are dispersed in the EVA phase, they induce more homogeneous distribution of EVA, and the crystallization behavior of PP is slightly affected by MWCNTs‐g‐MA. The corresponding mechanical properties including impact strength and tensile strength are tested and analyzed in the work. © 2009 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 47: 1481–1491, 2009     

纳米CaCO_3/相容剂/PP中的界面相互作用研究

采用不同相容剂(PP-g-MAH、POE-g-MAH和EVA-g-MAH)制备了不同界面相互作用的纳米CaCO3(CC)/相容剂/PP体系,研究了相容剂/PP和相容剂/CC界面相互作用对PP/CC的结晶形态、结晶行为、熔融特性和力学性能的影响.观察到PP/CC界面相互作用提高PP结晶温度和PP/CC的模量和冲击强度,但降低了屈服强度.相容剂/CC界面相互作用进一步提高了PP/CC的结晶温度.PP/相容剂界面相互作用取决于PP与相容剂相容性.PP/PP-g-MAH相容性高有利于提高PP/CC的异相成核作用和PP/CC屈服强度和模量,但降低冲击强度.PP/POE-g-MAH部分相容对相容剂/CC界面的异相成核作用、PP/CC屈服强度和模量影响不大,可明显提高冲击强度.但PP/EVA-g-MAH不相容导致PP/CC冲击强度明显降低.     

PP/PP-g-MAH/PA6共混物结构与可纺性研究

运用DSC、SEM、纺丝成形等手段研究了增容剂聚丙烯接枝马来酸酐 (PP g MAH)对聚丙烯 聚酰胺 6(PP PA6 )共混物结构和性能的影响 .结果表明 ,共混物呈典型海岛型两相结构 ;增容剂PP g MAH与PA6之间的在位反应改善了PP PA6共混体系的相容性 ,使共混物中PA6的热结晶峰消失 ,PP的结晶生长速率和成核速率降低 ,可纺性提高