超疏水技術是一種具有特殊表面性質的新型技術，具有防水、防霧、防污染、抗氧化和自清潔等重要特點。目前已有許多學術文章研究超疏水技術，但鮮少看到探討其對材料背面帶來之影響，因此本實驗針對此性質進行探討。
本實驗以紙做為基材，分別探討不同塗佈量(重塗紙、輕塗紙、微塗紙、新聞紙)及不同組成紙漿(道林紙、印書紙、影印紙、新聞紙)的紙之吸水能力、將超疏水之聚二乙烯苯奈米粒子以旋轉塗佈法塗佈在紙上，使其具有超疏水性質後，探討其背面之吸水能力之改變程度。同時，本實驗藉由調整合成超疏水之聚二乙烯苯奈米粒子之成份比例來改變其分子量，並觀察不同分子量之聚二乙烯苯奈米粒子對紙之吸水程度之影響。另外，本實驗也探討不同溫度下，水在經超疏水處理後之不同種類的紙之吸水能力，水在紙中的擴散符合阿瑞尼士方程式，活化能也會受超疏水粉末影響。

Superhydrophobic coating is a new technology, which makes surface be waterproof, anti-icing, anti-oxidation and self-cleaning, etc. Superhydrophobic technology has been studied in some academic articles, but the effects of superhydrophobic coating on the back side of the substrate were barely been discussed. This promoted us to study the effect of front superhydrophobic coating on the backside of substrate.
The substrate used in this experiment is paper, which are classified as coated paper and uncoated paper. In this experiment, papers were spin-coated with the superhydrophobic polydivinylbenzene (PDVB) nanoparticle to one side of them, then drop water droplet on it and observe whether the paper surface spreading rate of other side change. Additionally, the molecular weight of the PDVB nanoparticle can be changed by revising the concentration of Azobisisobutyronitrile (AIBN) used in the synthesis. Moreover, the diffusivity of water in paper increases as temperature increases, and satisfies the Arrhenius equation. The activation energies of spreading the controlled paper and superhydrophobic treated paper was discussed.

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