用过氧化二苯甲酰作为引发剂,合成了几种N-乙烯基吡咯烷酮(NVP)/甲基丙烯酸β-羟乙酯(HEMA)/甲基丙烯酸酯(RMA)共聚物水凝胶,用差热扫描量热法(DSC)和热重法(TG)对这些亲水凝胶中吸附水的状态进行了研究和比较。 2. Hydrogel was synthesized by copolymerization ofNVP,HEMA and MMA,with BPO as an initiator...
Glass transition temperature (Tg) measurements indicated that miscible blends of PVPr with ST‐VPMPS copolymers were formed when the copolymers contained 9 mole% VPMPS or more. In addition, precipitated interpolymer complexes were formed from solution blending when the copolymer contained 31 mole% ...
An accurate and rapid method for detg. the diffusion coeffs. of electrochem. active gases in electrolytes is described. The technique is based on chronoamp... AJV Stroe,LJJ Janssen - 《Analytica Chimica Acta》 被引量: 65发表: 1993年 KILLING THE GOOSE THAT LAYS THE GOLDEN EGG: INSTITUTIONAL...
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in which the PVP is obtained by polymerisation in an anhydrous organic solvent in presence of a radical inducer and opt. in presence of a heavy metal or atomic no. 23-29 as a complex salt of an organic acid as auxiliary activator, is of improved stability. The product is a known ...
Lee Y, Lee H, Kim YB, Kim J, Hyeon T, Park H, Messersmith PB, Park TG (2008) Bioinspired surface immobilization of hyaluronic acid on monodisperse magnetite nanocrystals for targeted cancer imaging. Adv Mater 20(21):4154–4157 CAS PubMed PubMed Central Google Scholar Neto AI, Meredith ...
poly(N‐vinylpyrrolidone)Polymer blends of poly(N-vinylpyrrolidone) (PVPr) and poly(styrene-co-4-vinylphenylmethylphenylsilanol) (ST-VPMPS) copolymers with varying amounts of VPMPS monomer units have been investigated. Glass transition temperature (Tg) measurements indicated that miscible blends of ...
The glass-transition temperature (Tg) values of the copolymers were measured by Differential Scanning Calorimetry and examined by means of several theoretical equations, allowing for the prediction of these Tg values. Subsequently, a systematic and detailed investigation of the thermal degradation of ...
The resulted nanofibrous products were characterized by scanning electron microscopy (SEM), thermogravimetric/differential thermal analysis (TG/DTA), attenuated total reflectance Fourier transform infra-red (ATR-FTIR), and X-ray diffraction (XRD) techniques. On the other hand, UV-Vis, zeta potential ...