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利用静态和动态光散射相结合的方法系统地研究了单根聚（Ｎ－异丙基丙烯酰胺）（ＰＮＩＰＡＭ）线性长链在无规线团（ｃｏｌｉ）和蜷曲球（ｇｌｏｂｕｌｅ）两个状态之间的转变和球形ＰＮＩＰＡＭ微凝胶的体积相变。首次在实验上证明，一根均聚物长链可以蜷曲成一个稳定的蜷曲单链球以及在无规线团和蜷曲球两个状态之间存在着两个热力学稳定态：皱缩的线团和融化的蜷曲球。另外，无规线团到蜷曲球的动力学研究结果否定了蜷曲球内存在高度链缠结的假说。作者的结果还显示，在完全蜷曲的单链球和收缩的微凝胶的流体力学体积内仍分别含有６６％和７０％的水。通过研究微凝胶与表面活性剂的相互作用，作者提出了与疏水作用不同的新的溶涨和收缩的机理。同时，作者利用核磁共振（ＮＭＲ）首次直接观察到既使在远低于临界胶束浓度时，表面活性剂分子也可在凝胶网络中形成胶束。通过比较单链和微凝胶收缩的差异，作者发现近年来观察到的大块凝胶的所谓的非连续体积变化并不是源于理论上所预测的非连续体积相变，而是由于内部不均匀收缩引致的内部应力同剪切模量之间的相互作用引起的。
The combination of static and dynamic light scattering was used to systematically investigate the effects of single poly (N-isopropylacrylamide) (PNIPAM) linear long chain on the two states of random coil and globule And the phase transition of spherical PNIPAM microgel. For the first time, it has been experimentally proved that a homopolymer long chain can be twisted into a stable curled single-chain ball and there are two thermodynamic stable states between the two states of random coil and curled ball: Melted curled ball. In addition, the results of kinetic studies of random coils to curling balls negate the hypothesis that there exists a high degree of entanglement in curling balls. The authors’ results also show that 66% and 70% of the water is still contained in the hydrodynamic volume of fully curled single-stranded globules and contracted microgels, respectively. By studying the interaction between microgels and surfactants, the authors propose new mechanisms of swelling and shrinkage that are different from hydrophobic interactions. At the same time, the authors first observed directly using nuclear magnetic resonance (NMR) that even at much lower critical micelle concentrations surfactant molecules can form micelles in the gel network. By comparing the differences in single-stranded and microgel shrinkage, the authors found that the so-called discontinuous volume changes observed for bulk gels in recent years do not originate from the theoretically predicted discontinuous volume phase transitions, but rather because the internal The result of the interaction between internal stress and shear modulus due to uniform shrinkage.