Na+-γ-poly(glutamic acid) (PGA)為一具有奇佳的高吸水性、生物可分解性、保濕性、無毒性等優良特性之高分子聚合物，因此用來與聚乙烯醇
(PVA)混摻製成薄膜。兩種高分子在室溫下且不需任何化學藥劑的條件下，PGA和PVA即可混合形成水膠。依不同比例之PGA/PVA (0%、10%、11.1%、12.5%、20%、27.3%、30%、40%、50%) 混摻薄膜測試在生理食鹽水中之膨潤度，證實其具有高吸濕性，之後以戊二醛與左旋維他命C共價結合，運用左旋維他命C之抗氧化能力，期能增加PGA／PVA混摻薄膜在生醫材料及化妝保養品產業上的應用。

Na+-γ-poly(glutamic acid) (PGA), a highly water-soluble, biodegradable, hygroscopic and non-cytotoxic polypeptides, was
chosen to fabricate the PGA/polyvinyl alcohol (PVA) blending membranes. By mixing PGA and PVA together, a hydrogel would
be formed at room temperature without any chemical treatment.It was proven to be a highly hygroscopic by mixing at different ratio
of PGA/PVA (0~50%) blending membranes for testing its swelling
ratio in normal saline. By glutaraldehyde to covalently bond L(+)-Ascorbic acid with PGA/PVA, the application of PGA/PVA
blending membranes can be broadened in medical devices and
cosmetic industries.

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