Dual CO₂- and thermo-responsive superabsorbent poly(N,N-dimethylallylamine) hydrogel (g-PDMAAm) was synthesized for the first time, via a one pot synthesis. When just using the CO₂-response, g-PDMAAm is highly hydrophilic and can absorb large volumes of water but cannot expel all this water upon deprotonation. When using the thermo-response, g-PDMAAm is less hydrophilic and can absorb smaller amounts of water but can release nearly all the water when heated. When the CO₂- and thermo-responsive properties are used in unison, g-PDMAAm can reversibly absorb 200 times its weight in carbonated water and expel up to 99.9% of the absorbed water upon application of modest heat (60 °C) in both air and water. Raising the temperature decreases both the extent of protonation and the osmotic pressure of the gel, which leads to improved water release. In a forward osmosis apparatus, the PDMAAm gel can extract water from 3.5 wt% NaCl feeds.

通过单罐合成法首次合成了双重CO _2-和热响应性超吸收性聚（N，N-二甲基烯丙基胺）水凝胶（g-PDMAAm）。当仅使用CO ₂响应时，g-PDMAAm具有高度亲水性，可以吸收大量的水，但是在去质子化时不能将所有这些水排出。使用热响应时，g-PDMAAm的亲水性较低，可以吸收较少量的水，但加热后几乎可以释放所有水。当CO ₂-同时具有热响应特性，g-PDMAAm可在碳酸水中可逆地吸收其重量的200倍，并在空气和水中适度加热（60°C）时可吸收高达99.9％的吸收水。升高温度既降低了质子化的程度，又降低了凝胶的渗透压，从而改善了水的释放。在正向渗透装置中，PDMAAm凝胶可以从3.5 wt％的NaCl进料中提取水。