Bamboo with the outstanding properties, such as good mechanical strength, fast growth rate and low growth cost, is considered as one of utilitarian structural nature materials. But bamboo is easy to get mildewed resulting in disfiguration and fungi corrosion. In this work, a facile method was developed to improve the mildew-proofing capability of bamboo. Mussel-inspired polydopamine (PDA) with biomimetic adhesion function and highly active functional groups was employed to immobilize highly-dispersed Ag and TiO2 nanoparticles on the surface of bamboo via an in-situ growth method. Integrating the uniform PDA coating, photocatalytic function of TiO2 nanoparticles and bactericidal role of Ag nanoparticles, the mildew-proofing capability of bamboo is enhanced significantly. The results show a non-covalent interaction is more likely to account for the binding mechanism of PDA to bamboo. And the prepared bamboo samples show good photocatalytic performance and have excellent resistance leachability. Meanwhile, the mildew-proofing property of prepared bamboo sample was greatly improved.

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In this paper, one kind of low density SMC has been introduced. Hollow-glass micro-spheres has been added into common SMC(Sheet Moulding Compound) to reduce the density, as well as the cost. Properties testing of SMC were conducted according to the National standards. Results showed that most of the indexes of the low density SMC are lower than that of common SMC with varying degrees of decline. Products were prepared by mould pressing. The weight of low density SMC product is decline by 17.3%. Some properties, such as medium resistance, vibration endurance, fatigue endurance, stiffness and strength, have been investigated in detail. Experimental and performance testing results showed that this kind of low density SMC is suitable for the automotive application.

The copolymers of 10% acrylic acid (AAc) and 90% acryl amide (AAm) were synthesized by free radical polymerization with 5% ethylene glycol dimethacrylate (EGDMA) as a crosslinker. The basic physical feature such as density, fixed charge density, average molecular weight, equilibrium water contentment and crosslink density were studied. In this investigation, the equilibrium and kinetic experiments were performed under three different ionic strengths, the equilibrium behavior of the hydrogels was characterized by varying the designed stimulus and by measuring the weight of hydrogel disc using a high accuracy balance. The ionic strength of the solution was adjusted with NaCl and the buffer solution was phosphoric acid. Potentiometric titration was performed to investigate the quantity of dissociated H+. Last, diffusion coefficients of aqueous sodium chloride in water swollen cross-linked poly (AAc-co-AAm) membranes were studied. A self-planned cell was used for the measurement of NaCl diffusion coefficients.

From the point of view of molecule design, pH/temperature responsive hydrogels were prepared based on the acrylic acid with the excellent pH sensitivity and N-isopropylacrylamide (NIPA) with the excellent temperature sensitivity by the traditional radical polymerization. Study focus on the swelling of the hydrogels, measurement of the swelling and deswelling under different ionic strength with various temperatures of the hydrogels were performed in our work. The results show that the ionic strength, the pH value and temperature are three key factors that affect the LCST of the hydrogel. In the same pH buffer solution, the swelling ratio decreases with temperature rises, and the ionic strength greatly affects the swelling of the pH temperature responsive hydrogel, the higher the ion concentration is, the lower the swelling ratio and the LCST are.