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An investigation into the substituent effect of halogen atoms on the crystal structures of indole-3-carboxylic acid (ICA)
An investigation into the substituent effect of halogen atoms (F, Cl, Br) on the crystal structure of indole-3-carboxylic acid (ICA) was prepared in this work. The investigation was done through the aspect of crystal structure, intermolecular interactions and p…p stacking motifs with the assistance of infrared spectra, elemental analyses, NMR spectra, differential scanning calorimetry (DSC), ther...
http://www.polymer.cn//ss/sunbw/publicationsshow_6124.html |
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A cocrystal strategy for the precipitation of liquid 2,3-dimethyl pyrazine with hydroxyl substituted benzoic acid and a Hirshfeld surfaces analysis of them
We here report the cocrystal strategy for the precipitation of liquid 2,3-dimethyl pyrazine (2,3-DMP) with the hydroxyl substituted benzoic acids: salicylic acid (SA), m-hydroxybenzoic acid (MHBA) and p-hydroxybenzoic acid (PHBA) under identical conditions, and obtained three cocrystals (cocrystal 1–3), respectively. Their crystal structures were characterized by single-crystal X-ray diffraction,...
http://www.polymer.cn//ss/sunbw/publicationsshow_6123.html |
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Investigation of supramolecular synthons of p-hydroxybenzoic acid (PHBA): Comparison of its hydrate, co-crystal and salt
An investigation of supramolecular synthons of p-hydroxybenzoic acid (PHBA) has been carried out in this work. Three different kinds of compounds derived fromPHBA (hydrate (1), co-crystal (2) and salt (3)) have been synthesized and characterized by single-crystal X-ray diffraction, infrared spectroscopy, differential scanning calorimetry (DSC) and thermogravimetric analyses (TGA). A thorough struc...
http://www.polymer.cn//ss/sunbw/publicationsshow_6083.html |
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Wettability of carbon fibers modified by acrylic acid and interface properties of carbon fiber/epoxy
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Wettability of carbon fibers modified by acrylic acid and interface properties of carbon fiber/epoxy. European Polymer Journal. 2008;44(2):494-503.
http://www.polymer.cn//ss/xuzw/publicationsshow_5662.html |
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Influence of silanized low-dimensional carbon nanofillers on mechanical, thermomechanical, and crystallization behaviors of poly(L-lactic acid) composites—A comparative study
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Li, Wenxiao, Chengbo Shi, Mingjing Shan, Qiwei Guo, Zhiwei Xu, Zhen Wang, Caiyun Yang, Wei Mai and Jiarong Niu. "Influence of Silanized Low-Dimensional Carbon Nanofillers on Mechanical, Thermomechanical, and Crystallization Behaviors of Poly(L-Lactic Acid) Composites—a Comparative Study." Journal of Applied Polymer Science 130, no. 2 (2013): 1194-1202.
http://www.polymer.cn//ss/xuzw/publicationsshow_5632.html |
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Interchain Hydrogen-Bonding-Induced Association of Poly(acrylic acid)- graft-poly(ethylene oxide) in Water
Poly(acrylic acid)-graft-poly(ethylene oxide) (PAA-g-PEO) in aqueous solutions shows one fast and one slow relaxation mode in dynamic light scattering (DLS), but the mixture ofPAAandPEO(PAA/PEO) in aqueous solution only has a single fast mode. The effects of pH, polymer concentration, and salt concentration on these two modes have been investigated using laser light scattering (LLS), v...
http://www.polymer.cn//ss/chengheiccas/publicationsshow_5593.html |
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Kinetically Driven Intra- and Interchain Association of Hydrophobically and Hydrophilically Modified Poly(acrylic acid) in Dilute Aqueous Solutions
Effects of pH, dodecyl, and PEO contents as well as the method of preparing the solution on the formation of the unimolecular micelles (unimer micelle) or aggregates made of poly(acrylic acid)-graftpoly( ethylene oxide)-graft-dodecyl (PAA-g-PEO-g-dodecyl) and PAA-g-dodecyl have been studied by a combination of static and dynamic laser light scattering (SLS and DLS). It revealed th...
http://www.polymer.cn//ss/chengheiccas/publicationsshow_5591.html |
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Charge-Transfer Complexation Mechanism of Poly(4-vinylpyridine)/[6,6]- Phenyl-C61-butyric Acid Methyl Ester in DMF Solution
Small-angle
neutron scattering was used to investigate
poly(N-isopropylacrylamide) (PNIPAM) polymer solutions in d-water/d-ethanol mixtures. A wide poor-solvent region was observed for mixtures near 60% d-water/40% dethanol mixture. Spinodal lines were determined, permitting a mapping of the mixing/demixing regions of the phase diagram which comprises two main branc...
http://www.polymer.cn//ss/chengheiccas/publicationsshow_5578.html |
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Poly(ortho ester amides): acid-labile temperature-responsive copolymers for potential biomedical applications
A new, convenient pathway is developed to synthesize highly hydrolytically labile poly(ortho ester amide) (POEA) copolymers that overcomes some of the major weaknesses of the traditional methods of synthesizing poly(ortho esters) and their derivatives. A diamine monomer containing a built-in, stabilized ortho ester group was synthesized and was used for polycondensation with diacid ...
http://www.polymer.cn//ss/tangrupei/publicationsshow_5503.html |
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Synthesis of Novel Organic Urea Compounds and Their Roles as Crystallization Nucleating Agents of Poly (L-lactic acid)
A series of novel organic bisurea (BUr) compounds were facilely synthesized from phenyl
isocyanate and a variety of diamines, and their roles as crystallization nucleating agents of
commercial poly(L-lactic acid) (PLLA) were investigated through differential scanning calorimetry (DSC), polarized optical microscopy (POM) and wide-angle X-ray diffraction
(WAXD). Their crystallization accelerati...
http://www.polymer.cn//ss/wulinbo/publicationsshow_5139.html |
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