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The multiple layered graphene oxide (GO) was prepared by modified Hummer's method. Then few-layered GO was obtained by forming intercalation composites with the multiple layered GO and poly(acrylic acid-acrylamide-diallyl dimethyl ammonium chloride) (PAAD). The goal is to prepare large-scale ordered structure in the whole cement composites by distributing uniformly the GO in cement matrix. The effects of PAAD on GO nanosheets and its distribution within the cement paste were investigated and assessed by characterization of the size range of GO nanosheets and microstrcuture of cement matrix. The results showed that the GO nanosheet size can reduce to 3-110 nm from 6.5-450 nm in composites with PAAD, in contrast to 5-210 nm for polycarboxylate superplasticizers. Doping GO/PAAD intercalation composites, the large-scale ordered structural cement composites were prepared. The SEM images indicated that the whole cement composites consisted of regular cement hydration products by interweaving and crosslinking. The X-ray diffraction patterns indicated that there are new crystals in the cement composites and the amorphous hydration products have been transferred into crystal phase. The forming mechanism was proposed according to these research results. The test results indicated that the cement composites have high compressive and flexural strengths, good heat resistance, few cracks, small average pore diameter and good durability.

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A series of L‐lactide (LLA), 1,3‐trimethylene carbonate (TMC) and glycolide (GA) terpolymers (LTG) of different monomer molar ratios were synthesized by using ring‐opening copolymerization. An effective and low‐toxic zirconium (IV) acetylacetonate Zr(Acac)4 was used as catalyst. The viscosity‐average molecular weights (Mη) of obtained polymers were all above 2.2×104 g/mol. The chemical structure and viscosity of terpolymers were confirmed by Fourier transform infrared spectroscopy (FTIR), 1H nuclear magnetic resonance (1HNMR), 13C nuclear magnetic resonance (13CNMR) and an Ubbelohde viscometer. The thermal and mechanical properties were investigated by means of differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X‐ray diffraction (XRD) and stress‐strain measurements. Results suggested that all terpolymers were amorphous and showed good thermal stability. Also it was found that elongation increased with the decreasing of LLA unit. More importantly, terpolymers displayed shape memory property when deformation temperatures were 14‐15 °C above Tg.