A semi-interpenetrating network hydrogel with pore structure (P-S-IPN) was prepared by solution polymerization with 4-acetyl acryloyl ethyl acetate (AAEA) and crylic acid (AA) as monomers, polyvinylpyrrolidone (PVP) as the second network and polyving akohol 2000(PEG2000) as a pore-foaming agent. Gold nanoparticle composite hydrogel (GNPs gel) was obtained through in-situ reduction reaction by using P-S-IPN as a template. P-S-IPN exhibits excellent mechanical strength, the maximum compressive strength is 14.0 Mpa. The influence of the dosage of PEG2000 on the swelling/deswelling properties of P-S-IPN and GNPs gel was investigated. The pore structures could shorten the time that P-S-IPN takes to reach swelling equilibrium from 170min to 75min, improve the ability of P-S-IPN to absorb AuCl4-. The swelling/deswelling properties of GNPs gel under an applied voltage showed when the concentration of NaCl solutions exceed 0.025mol/L, the hydrogel swells, when the concentration of NaCl solutions is below 0.025mol/L, it deswells.

The effects of ethylene vinyl acetate grafting maleic anhydride (EVA-g-MAH )as a compatilizer on the mechanical properties, compatibility and morphological structure of thermoplastic Polyurethane and poly(vinyl chloride) blends were studied. The blends were prepared and characterized by mechanics properties test, scanning electron microscopy(SEM,)dynamic mechanical properties (DMA) and thermogravimetry(TG) . Mechanical properties indicate that the hardness, tensile strength, breaking elongation of the blends are greatly improved by EVA-g-MAH, when the critical EVA-g-MAH content at about 4 wt%.SEM micrographs reveal that EVA-g-MAH could bring down the diameter of dispersed , change brittle fracture into ductile fracture, and promote adhesion of phase interface. The glass transition temperature change by DMA proves that the addition of the EVA-g-MAH improved the compatibilization of blends. And the results of TG experiment show that EVA-g-MAH greatly improve the thermal stability of the blends.

In order to extract tea polyphenols (TPs) by water under room temperature, the mechanochemical methodology was used for leaching process, and then TPs was purified from leaching solution by ethanol and ammonium sulfate aqueous two-phase system. The optimum parameters of mechanochemical methodology leaching TPs were determined by response surface methodology (RSM), which optimum parameters were: Na2CO3content 25~27wt%, solid material particle size D9540~45μm, liquid/solid mass ratio55~60, leaching time 16~18min. The TPs leaching rate was 16.46%. When ammonium sulfate mass composition0.2, ethanol mass composition0.35 as the composite of the extraction system, TPs maximum extraction rate was 93.4%. The maximum yield of TPs was 15.25% on the average, with average purity was 96.54% ultimately. Under such technology, water is only solvent used in TPs leaching at room temperature, and aqueous two-phase system extraction system under mild conditions, avoid the use of toxic solvent, is a green technology for extracting TPs.