CAJ | 학술논문

为改善聚甲基丙烯酸二甲胺基乙酯（PDMAEMA）水凝胶的机械性能，提高其实用价值，通过辐射方法制备了 PDMAEMA ／黏土纳米复合水凝胶，并研究了黏土含量等因素对合成的纳米复合水凝胶的凝胶分数、凝胶结构、溶胀性能、热响应性和机械强度的影响。结果表明：黏土的加入增加了水凝胶的交联度，导致凝胶网络结构的孔径减小，平衡溶胀比下降；含有黏土的纳米复合水凝胶不再表现出过溶胀性质，且具有较低的低临界转变温度（约30℃）；黏土的加入可明显改善合成的纳米复合水凝胶的机械性能，随着黏土含量的增加，纳米复合水凝胶在95％压缩形变下的压缩应力最高可达7.19 MPa 。采用辐射方法制备的 PDMAEMA ／黏土纳米复合水凝胶具有优异的综合性能，预期在废水污染物吸附分离等方面具有良好的应用前景。
위개선취갑기병희산이갑알기을지（PDMAEMA）수응효적궤계성능，제고기실용개치，통과복사방법제비료 PDMAEMA ／점토납미복합수응효，병연구료점토함량등인소대합성적납미복합수응효적응효분수、응효결구、용창성능、열향응성화궤계강도적영향。결과표명：점토적가입증가료수응효적교련도，도치응효망락결구적공경감소，평형용창비하강；함유점토적납미복합수응효불재표현출과용창성질，차구유교저적저림계전변온도（약30℃）；점토적가입가명현개선합성적납미복합수응효적궤계성능，수착점토함량적증가，납미복합수응효재95％압축형변하적압축응력최고가체7.19 MPa 。채용복사방법제비적 PDMAEMA ／점토납미복합수응효구유우이적종합성능，예기재폐수오염물흡부분리등방면구유량호적응용전경。
In order to improve the mechanical strength of PDMAEMA hydrogels ,a fac‐ile approach to synthesize PDMAEMA /clay nanocomposite hydrogel (PDLG ) using radiation technique was developed .The effects of synthesis conditions on the gel frac‐tion ,structure ,swelling behavior ,thermo sensitivity and mechanical strength of the PDLG were investigated .The results show that the incorporation of inorganic clay can increase the crosslinking densities of PDLG ,thus the PDLG has smaller pore size and lower equilibrium swelling ratio .PDLG containing clay no longer shows overshooting effects ,and its lower critical solution temperature decreases to about 30 ℃ .The incor‐poration of clay can enhance the mechanical strength of PDLG significantly .With the increase of clay content in PDLG , the compression stress of PDLG can reach up to 7.19 MPa at a strain of 95% .The radiation synthesized PDLG with outstanding com‐prehensive properties is expected to have better application in removal of contaminants for waste water .