Pentaerythritol was used as the plasticizer to prepare PVA films through solution casting method. The interaction between pentaerythritol and PVA was studied by FTIR. The crystallinity of raw PVA and modified PVA films was characterized by X-ray diffraction. The effect of the addition of pentaerythritol on the swelling properties, mechanical properties and optical properties of PVA films were investigated. The experimental results showed that the addition of pentaerythritol destroyed the hydrogen bonding in the PVA molecule and reduced the crystallinity of PVA. As the pentaerythritol content increased, the swelling property of the PVA films was significantly improved. The addition of pentaerythritol into PVA resulted in the increase of elongation at break, as well as the decrease of tensile strength. As the amount of pentaerythritol added, the optical performance of the PVA films was improved.

以季戊四醇为增塑剂，通过溶液流延法制备了PVA薄膜。FTIR研究了季戊四醇与PVA之间的相互作用。通过X射线衍射表征原始PVA和改性PVA膜的结晶度。研究了季戊四醇的添加对PVA薄膜的溶胀性能，机械性能和光学性能的影响。实验结果表明，季戊四醇的加入破坏了PVA分子中的氢键，降低了PVA的结晶度。随着季戊四醇含量的增加，PVA膜的溶胀性得到显着改善。在PVA中加入季戊四醇会导致断裂伸长率的增加，以及抗张强度的降低。随着季戊四醇的添加量增加，