本研究探討以高分子聚合物進行空氣中水氣的吸附作用以及再生特性，並利用其特性設計適合的使用形式與裝置進行實驗。
研究選用聚N-異丙基丙烯醯胺（PNIPAAm）聚合高分子研究，合成結果採用核磁共振光譜儀(NMR)、元素分析儀(EA)、氮氣氣體吸附儀(BET)以及傅立葉紅外線光譜儀(FTIR)進行鑑定與特性分析。熱重分析儀(TGA)、吸/脫附裝置及恆濕恆溫裝置進行材料對水氣的吸脫附實驗。此材料具有低臨界溶解溫度(LCST，lower critical solution temperature)特性位於32.5℃，利用特性製作聚N-異丙基丙烯醯胺除濕濾材，常態下進行水氣的吸附，高溫進行材料的除水再生。40℃及50℃PNIPAAm粉體加熱再生速率為矽膠 1.3倍快；除濕濾材置於空氣中(RH:60%，28℃)，可以吸收5g/m2的水氣。
管式除溼裝置實驗，結果顯示此材料的除濕特性，將實驗環境原本的相對濕度(RH)66%降至54%，且溫度變化不大，絕對溼度(AH)變化減少了3g/kg DA，證實該材料能有用於濕度調控。

The main objective of this research is focused on the adsorption and desorption reactions between polymer and vapor. The related filter and device for dehumification purpose are develpoed according to its property.
In this study, NIPAAm are used to synthesis PNIPAAm, which is identified by nuclear magnetic resonance spectroscopy, elemental analyzer, specific surface area analyzer, and Fourier transform infrared spectroscopy, respectively. The behavior between PNIPAAm and vapor is investigated by thermogravimetry and isothermal packed bed reactor at controlled humidity. The dehumidifying filter is prepared with using the synthesized PNIPAAm due to its low critical solution temperature (32.5°C). In the test, the regeneration rate of PNIPAAm powder is 1.3 times higher than silica gel at 40°C and 50°C. The dehumidifying capacity of this filter is 5 g-H2O/m2 under ambient condition (RH60% and 28°C).
The results of the PNIPAAm -packed column system indicate the room relative humidity (RH) can be decreased sharply from 66% to 54% without the obvious increase in room temperature. The practicability of this material is thus proven and it can be applied for energy-saving dehumidifier.

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