Transparency Research of Poly(L-lactide) Films and Its Modified Films

  • Xiaohui ZhangEmail author
  • Wenjuan Gu
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 543)


Using polyhedral oligomeric silsesquioxanes (POSS) to modify Poly(L-lactide) (PLLA) had been studied to improve the properties in recent years. In the paper, the transparency of PLLA films and modified PLLA films was studied. First, PLLA films and a series of modified PLLA films were prepared. Star-shaped POSS-g-PLLA was prepared by using L-lactic acid and POSS-NH3Cl in the presence of stannous (II) octanoate (Sn (Otc)2) catalyst. A series of modified films were prepared by using octa(γ-chloroammoniumpropyl) octasilsesquioxane (POSS-NH3Cl) and POSS-g-PLLA. Meanwhile, the reaction was characterized by Fourier Transform Infrared spectrometry (FTIR). Secondly, transparency of PLLA films, PLLA/POSS-NH3Cl films, PLLA/POSS-g-PLLA films and POSS-g-PLLA films were investigated, respectively. The conclusions were as follows: (1) the transparency of PLLA/POSS-NH3Cl, PLLA/POSS-g-PLLA and POSS-g-PLLA films was improved. (2) The transparency of POSS-g-PLLA films was the best, and the transparency of PLLA/POSS-g-PLLA films was better than that of PLLA/POSS-NH3Cl films. (3) The transparency of POSS-g-PLLA films was significantly improved. In the visible spectral range (400–800 nm), the transparency of POSS-g-PLLA films was increased with the increase of POSS-NH3Cl, and the transparency of the films improves even 58% in some wavelength. These phenomena were explained theoretically.


PLLA Modified PLLA films Transparency 


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© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.School of Media and DesignHangzhou Dianzi UniversityHangzhouChina
  2. 2.Faculty of Mechanical and Electrical EngineeringKunming University of Science and TechnologyKunmingChina

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