Surfactant-Assisted Poly(lactic acid)/Cellulose Nanocrystal Bionanocomposite for Potential Application in Paper Coating

• 作者: Ahmed Salama Hind Abdullah Aljohani Kamel Rizq Shoueir Mohamed A.Diab Ragab E.Abou-Zeid Salah A.A.Mohamed
• 来源期刊: 可再生材料杂志(英文)
• 学科: 工学
• 关键词: CELLULOSE nanocrystal SURFACTANT PAPER COATING mechanical properties air PERMEABILITY water vapor
• 年，卷（期）: kzsclzzyw_2018,（4）
• 页码范围: 394-401
• 页数: 8页
• 分类号: TB3

摘要

The current article addresses a new strategy for the preparation of polylactic acid/cellulose nanocrystal(PLA/CNCs)nanobiocomposite films with improved structural morphology,mechanical and barrier properties for food packaging applications.The addition of hexadecyltrimethylammonium bromide(CTAB)and sodium lauryl sulfate(SLS)as cationic and anionic surfactants respectively,was found to play a crucial role in preventing re-aggregation of the CNCs during drying and improving the dispersion of CNCs in the PLA.The coated paper was characterized using mechanical tests,water vapor permeability(WVP),X-ray diffraction(XRD),scanning electron microscopy(SEM)and air permeability.The results showed that the paper coated with PLA containing 7.5%CNCs and 0.15%CTAB based on weight of PLA,gives the highest measured paper properties,where an increase in tensile strength(+133%),Young’s modulus(+309%),tear index(+183%),burst(+60.8)and a decrease in air permeability(?92%)was obtained.