In order to extend the application of environmentally-friendly hemicelluloses as potential packing material
this article focuses on the preparation of high-performance polymeric films which is strong enough to protect contained product and to withstand mechanical stress during its application
transportation
and storage. Composite films based on polyvinyl alcohol (PVA) and hemicelluloses
extracted from corncob by alkaline hydrolysis and alcohol precipitation
were prepared using convenient and feasible solution casting. Furthermore
various amounts of nanocrystalline cellulose (NCC) prepared from cotton by using sulphuric acid hydrolysis were added to form enhanced composite films. Tensile test
differential scanning calorimetry (DSC)
thermogravimetric analysis (TGA)
infrared spectroscopy (IR) and scanning electron microscopy (SEM) were used to characterize the composite films. IR results showed that hydrogen bonding formed in blending components
which indicated good compatibility between them. DSC analysis showed that addition of hemicellulose within a certain range created a boost to the crystallinity of PVA
and addition of the rigid NCC showed an inhabiting effect to the crystallinity of the PVA component in the blend films. TGA results revealed that additions of hemicellulose and NCC also resulted in a 50℃ increase for the peak of the second-stage thermal decomposition
indicating a significant improvement for thermal resistance. Mechanical measurements showed that elongation at break of the PVA/hemicellulose composite films was increased to 380% at PVA/hemicellulose mass ratio of 3:1
while the tensile strength was maintained at a reasonably high level (50-60 MPa). It is thus obvious that there exists an increasement of toughness to the composite films. Moreover
low mass fraction of NCC (0.5%) has been found to improve the tensile strength of the PVA/hemicellulose blend film (PH
1
)
while high mass fraction of NCC (1%
3%
5%) contributed to improve elongation at break.
关键词
纳米纤维素晶须半纤维素复合膜热稳定性结晶度裂伸长率
Keywords
Nanocrystalline celluloseHemicellulose composite filmThermal stabilityCrystallinityelongation at break
references
Y Sakurada , A Sueoka , M Kawahashi . Polym J , 1987 . 19 ( 5 ): 501 - 513 . DOI:10.1295/polymj.19.501http://doi.org/10.1295/polymj.19.501.
M Suzana , D Flávia , V E Maria , F Y Grossmann . Industrial Crops & Products , 2010 . 32 ( 3 ): 353 - 359.
J A Sirviö , S Honkaniemi , M Visanko , H Liimatainen . ACS Appl Mater Interfaces , 2015 . 7 ( 35 ): 19691 - 19699 . DOI:10.1021/acsami.5b04879http://doi.org/10.1021/acsami.5b04879.
Y Zhang , L Pitkänen , J Douglade , M Tenkanen , C Remond , C Joly . Carbohydr Polym , 2011 . 86 ( 2 ): 852 - 859 . DOI:10.1016/j.carbpol.2011.05.036http://doi.org/10.1016/j.carbpol.2011.05.036.
N M L Hansen , D Packett . Biomacromolecules , 2008 . 9 ( 6 ): 1493 - 505 . DOI:10.1021/bm800053zhttp://doi.org/10.1021/bm800053z.
P Terech , L Chazeau , J Y Cavaille . Macromolecules , 1999 . 32 ( 6 ): 1872 - 1875 . DOI:10.1021/ma9810621http://doi.org/10.1021/ma9810621.
J F Revol , L Godbout , X M Dong , D G. Gray , H Chanzy , G Maret . Liq Cryst , 1994 . 16 ( 1 ): 127 - 134 . DOI:10.1080/02678299408036525http://doi.org/10.1080/02678299408036525.
J F Revol , H Bradford , J Giasson , R H Marchessault , D G Gray . Int J Biol Macromol , 1992 . 14 ( 14 ): 170 - 172.
M Pääkkö , M Ankerfors , H Kosonen , A Nykänen , S Ahola , M Österberg , J Ruokolainen , J Laine , P T Larsson , O Ikkala , T Lindström . Biomacromolecules , 2007 . 8 ( 6 ): 1934 - 1941 . DOI:10.1021/bm061215phttp://doi.org/10.1021/bm061215p.
A M Idrovo Encalada , M F Basanta , E N Fissore , M D Fissore , A M Rojas . Carbohydr Polym , 2016 . 136 1041 - 1051 . DOI:10.1016/j.carbpol.2015.09.109http://doi.org/10.1016/j.carbpol.2015.09.109.
S L Xiao , R N Gao , L K Gao , J Li . Carbohydr Polym , 2015 . 136 1027 - 1034.
N Rambabu , S Panthapulakkal , M Sain , A K Dalai . Industrial Crops & Products , 2015 . 83 746 - 754.
Q J Wu , M Henriksson , X H Liu , L A Berglund . Biomacromolecules , 2007 . 8 ( 12 ): 3687 - 3692 . DOI:10.1021/bm701061thttp://doi.org/10.1021/bm701061t.
M A S Azizi Samir , F Alloin , J Y Sanchez , A Dufresne . Macromolecules , 2004 . 37 ( 13 ): 4839 - 4844 . DOI:10.1021/ma049504yhttp://doi.org/10.1021/ma049504y.
L Carlsson , T Ingverud , H Blomberg , A Carlmark , P T Larsson , E Malmström . Cellulose , 2015 . 22 ( 2 ): 1063 - 1074 . DOI:10.1007/s10570-014-0510-1http://doi.org/10.1007/s10570-014-0510-1.
A Alemdar , M Sain . Compos Sci Technol , 2008 . 68 557 - 565 . DOI:10.1016/j.compscitech.2007.05.044http://doi.org/10.1016/j.compscitech.2007.05.044.
L Petersson , I Kvien , K Oksman . Compos Sci Technol , 2007 . 67 ( s11-12 ): 2535 - 2544.
L Tang , C Weder . ACS Appl Mater Interface , 2010 . 2 ( 4 ): 1073 - 1080 . DOI:10.1021/am900830hhttp://doi.org/10.1021/am900830h.
C J Zhou , Q L Wu , Y Y Yue , Q G Zhang . J Colloid Interface Sci , 2011 . 353 ( 1 ): 116 - 123 . DOI:10.1016/j.jcis.2010.09.035http://doi.org/10.1016/j.jcis.2010.09.035.
R C Sun , X F Sun , J T And . ACS Symposium Series , 2003 . 2 - 22.
Jiang Fuqing.Preparation and Property Study of Chitosan Membrane and It's Blend Membranes.Doctoral Dissertation of Donghua University,2010
姜福青.壳聚糖膜及其共混膜的制备和性能研究.Doctoral Dissertation of Donghua University,2010
Jinling Li , Liujia Zhou , Daiyong Ye . Fine Chemicals , 2009 . 26 ( 9 ): 844 - 849.
G G Chen , X M Qi , M P Li , Y Guan , J Bian , F Peng , C L Yao , R C Sun . Scientific Reports , 2015 . 5 1 - 12 . DOI:10.9734/JSRRhttp://doi.org/10.9734/JSRR.
S Y Wang , J L Ren , W Y Li , R C Sun , S J Liu . Carbohydr Polym , 2014 . 103 ( 4 ): 94 - 99.