Welcome to visit Scientia Silvae Sinicae,Today is

Scientia Silvae Sinicae ›› 2011, Vol. 47 ›› Issue (11): 144-148.doi: 10.11707/j.1001-7488.20111123

Previous Articles     Next Articles

The Crystallization Behaviors and Thermal Properties of PVA/NCC Composite Films

Tang Lirong1,2, Huang Biao1, Dai Dasong1, Ou Wen1, Li Yuhua1, Chen Xuerong1   

  1. 1. College of Material Engineering,Fujian Agriculture and Forestry University Fuzhou 350002;2. Jinshan College, Fujian Agriculture and Forestry University Fuzhou 350002
  • Received:2010-01-13 Revised:2010-03-04 Online:2011-11-25 Published:2011-11-25

Abstract:

Nanocellulose crystal(NCC)was prepared from microcrystalline cellulose(MCC)by sulfuric acid treatment, and composite films were prepared from polyvinyl alcohol(PVA) as the matrix and NCC as the filler. Their morphology, size and thermal properties were characterized by field emission transmission electron microscopy(FETEM), atomic force microscopy(AFM), field emission gun environment scanning electron microscopes (FEGE-SEM), thermogravimetric analysis(TG)and differential scanning calorimetry(DSC). The results indicated that the diameter of NCC was about 2-24 nm, with the length 50-450 nm. From FE-SEM images, it could be observed that PVA /NCC composite films were created by casting from a water suspension to produce a homogeneous dispersion of NCC in the polymer matrix. But it showed some agglomeration when the filler loading reached to 7%, and the interaction between NCC and PVA decreased. TG and DSC analysis showed excellent interaction between NCC and PVA. The composite films filled with nanocellulose crystal exhibited improved thermal properties as compared to the neat PVA film. On the other hand, the thermal stability of the PVA composite films was decreased with filler loading increased to 7%.

Key words: polyvinyl alcohol, nanocellulose crystal, composite films, thermal properties

CLC Number: