膠帶產業隨著工業化而迅速擴展，其中膠帶黏著層為提供黏著性質之關鍵，稱為感壓膠。然而，一般商用感壓膠通常為石化原料製品，既非生物基也不易生物降解，長久以來對環境已造成負擔。如今，科學家致力於發展可永續循環之高值化生質資源於相關材料。生物質聚氨酯材料之環境友善與容易取得特性逐漸受到關注，因此可以替代傳統的永久黏性材料。本研究中選用聚(己二酸丁二酯)( poly (butylene adipate), PBA)和聚丙二醇( polypropylene glycol, PPG)為軟鏈段之來源與異佛爾酮二異氰酸酯(isophorone diisocyanate, IPDI)組成預聚物，並控制鏈延長劑和交聯劑當量合成可生物降解的聚氨酯。其化學結構透過傅里葉變換紅外光譜(FT-IR)和凝膠滲透色譜法鑑定(GPC)。此外，使用熱重分析(TGA)和差示掃描量熱法(DSC)研究熱物理性質。除此之外，所使用之添加劑亦是生物質和可生物降解。配方基於聚氨酯主體混摻20 Phr松香酯增黏劑與0至20 Phr之非鄰苯二甲酸酯可塑劑，表現出剝離強度2.5－5.2 N cm-1、滾球初黏性23.4－7.3 cm和環形初黏性1.09－1.73 N cm-2之感壓膠性質，可與目前壓克力系標準測試膠帶相媲美。此外，透過高分子流變性質分析並驗證所有試樣皆滿足Dahlquist之初黏準則及分布於Chang 黏彈性窗口之通用需求感壓膠應用。因此，環保型聚氨酯感壓膠顯示出替代傳統黏著劑的巨大潛力。

The tape industry is growing rapidly with an increase in industrialization, pressure sensitive adhesive (PSA) is the most popular category of tapes being researched. PSA is usually produced from petroleum-based chemicals which have many disadvantages. Nowadays, researchers focus on developing sustainable technologies and materials from renewable resources. Bio-based polyurethane can replace the traditional adhesive materials because it has low environmental impact, and it is easily obtained. In this study, poly (butylene adipate) (PBA) and polypropylene glycol (PPG) were used as a soft segment by the bridge of isophorone diisocyanate (IPDI) and also control the ratio of chain extender and crosslinker to synthesize biodegradable polyurethanes (PU). The chemical structures of the polymer are characterized by Fourier transform infrared spectroscopy and gel permeation chromatography. Moreover, the physical properties are investigated by using thermogravimetric analysis and differential scanning calorimetry. Other than that, the additives used in this study is also biomass and biodegradable. The host PU is combined with the rosin ester tackifier of 20 Phr and the non-phthalate plasticizer of 0−20 Phr. The PSA performance was evaluated showing peel strength of 2.5−5.2 N cm-1, rolling ball tack of 23.4−7.3 cm, and loop tack of 1.09−1.73 N cm-2, which are comparable to current acrylic standard test tape. Furthermore, the rheological properties of the materials were determined to analyze all samples that satisfied the Dahlquist criterion of tack and Chang's viscoelastic windows are applied as general-purpose PSAs Therefore, the environment friendly polyurethane pressure sensitive adhesive shows great potential to replace traditional adhesive material.

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