中文摘要：

采用水溶性聚合单体甲基丙烯酸和丙烯醛在钠基蒙脱土层间直接原位插层聚合制备水溶性甲基丙烯酸–丙烯醛共聚物/蒙脱土纳米复合材料,并采用X射线衍射、透射电镜、红外光谱、热分析仪等对纳米复合材料的结构进行表征。结果表明：聚合物分子与黏土片层之间具有相互作用,甲基丙烯酸和丙烯醛在蒙脱土层间成功发生了聚合,所制备的纳米复合材料属于剥离型纳米复合材料。与未改性的聚合物基体相比,纳米复合材料的热分解温度提高了20多度。与纯铬粉鞣制的胶原相比,采用6%（质量分数,下同）纳米复合材料结合2%铬粉处理胶原可使胶原的各方面性能均得到较大改善,同时,废液中的铬含量减少了50%以上。

英文摘要：

Water-soluble poly （methacrylic acid （MAA）-co-acraldehyde （AL）/montmorillonite （MMT）（poly（MAA-co-AL）/MMT） nanocomposites were prepared using Na^＋-montmorillonite （Na^＋-MMT） via in-situ polymerization of methacrylic acid （MAA） and acraldehyde （AL） in aqueous medium. The resulting poly（MAA-co-AL）/MMT nanocomposites were characterized by X-ray diffraction, transmission electron microscope, Fourier transform infi＇ared spectroscopy, and thermo-gravimetric analysis. Polymer molecules and clay particles interacted with each other. Moreover, methacrylic acid and acraldehyde were polymerized in the MMT inter-lamellar. The nanocomposite formed could be categorized as an exfoliated nanocomposite. It exhibites more than 20℃ improvement in thermal degradation temperature, compared to the unmodified polymer counterpart. The improved properties of collagen treated with 6% （in mass, the same below） nanocomposites associated with 2% chromate are shown, in contrast to the collagen only treated with chromate. Furthermore, the chrome content of waste liquids decreases by more than 50%.