期刊
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
卷 57, 期 12, 页码 826-836出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10601325.2020.1796493
关键词
Antifogging; migration; LLDPE; graft; GMS
资金
- National Key Program of Research and Development of China [2016YFB0302401]
- National Natural Science Foundation of China [21504008]
- Science and Technology Research Planning Project of the Education Department of Jilin Province [JJKH20190556KJ]
Antifogging films are used in an increasing number of applications in greenhouse cultivation because fog formation affects transmission. Here, we summarize a way to improve the antifogging duration of linear low-density polyethylene (LLDPE) films by controlling the migration of the antifog agent. We prepared SiO2-grafted glycerin monostearate (SiO2-g-GMS) by covalently grafting surface modified SiO(2)nanoparticles and glycerin acrylic acid monostearate (GMS-AA). Then, SiO2-g-GMS was added in LLDPE, and antifogging films were prepared for study of their properties. The reaction with modified SiO(2)and GMS-AA was demonstrated by Fourier transform infrared spectroscopy, thermogravimetric analysis and grafting degree (GD). The GD of SiO2-g-GMS was approximately 54.95%. Accelerating dripping experiments and contact angle measurements illustrated that GMS-AA-grafted modified SiO(2)exhibited delayed migration of the antifog agent, prolonging the antifogging duration by approximately 3 days. We determined that 3 wt% SiO2-g-GMS was a suitable proportion, considering economy and the desired properties. The SEM images indicate that dispersion of SiO2-g-GMS in the film was extensive, and the particle size was 160 +/- 40 nm. In addition, the study also showed how modified SiO(2)grafted with GMS-AA does not affect the processes and usability of antifogging films.
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