Composite sulfonated bisphenol-A-polysulfone (SPSF) based PEMs, containing tungstophosphoric acid (TPA) and modified by electron beam (EB) irradiation with doses of 50 and 100kGy, were prepared and characterized by a number of physico-chemical methods. The probability of the cross-linking was ...
The TPA coefficient is β=4.0±0.5 cm/GW for the polymer. At high laser intensities (>7 GW/cm2) photoinduced transformation into some new configuration is taken place that is more absorbent at 532 nm (β=16.7±3 cm/GW for the photoproduct). Up to a pumping irradiance of 20 GW/cm2 ...
A family of aromatic thermotropic liquid crystal (TLC) copolyesters are prepared based on terephthalic acid (TPA), isophthalic acid (IPA), p -hydroxybenzoi... Z Zhao,X Wu,Y Lin,... - 《Journal of Applied Polymer Science》 被引量: 5发表: 2010年 加载更多来源...
84 The halogen elements in the epoxy backbone such as chlorine in diglycidyl ether of Bisphenol C (DGEBC), fluorine in diglycidyl ether of Bisphenol F (DGEBF), bromine in tetrabromobisphenol A (TBBA), also enhance the thermal stability of the epoxy resins. For example, the presence of ...
Commercially available tripropargylamine (TPA) was also studied. Curing energetics as a function of alkyne type and catalyst loading, investigated through a dynamic differential scanning calorimetry approach, displayed two distinct kinetic profiles when considering propiolate and propargyl type crosslinkers. ...
Rheologicalexperimentswereperformedonaseriesofthermotropicliquidcrystallinearomaticcopolyestersbasedonterephthalicacid(TPA),isophthalicacid(IPA),p-hydroxybenzoicacid(HBA),andafamilyofbisphenolsTheanisotropicmeltsbehavedasnon-NewtonianfluidsinashearelongationflowThenon-Newtonianexponentsofthemeltsdecreasedwithincreasingthe...
A family of aromatic thermotropic liquid crystal (TLC) copolyesters are prepared based on terephthalic acid (TPA), isophthalic acid (IPA), p -hydroxybenzoic acid (HBA), and a family of bisphenols. The morphological behaviors of the copolyesters are studied by using polarized optical microscopy, ...
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