NOVEL LIGNIN BASED BARRIER MATERIAL FOR PACKAGING
In this study, lignin was esterified with palmitic acid and tested for application in coatings of fiber based packaging material. The aim was to improve the barrier properties against water vapor and oxygen of the paperboard. The modified lignin materials were applied by a bar coater on the paperboard and formed a smooth surface on the board material. The ability of the modified lignin samples to act as a moisture barrier was investigated by determining the water vapor transmission rate (WVTR). A significant decrease in WVTR was observed for all the lignin coated board samples. Furthermore, the contact angle of the modified lignin coatings was high and stable. For all the investigated lignin coated board samples a significant decrease in oxygen transmission rate (OTR) was observed. According to the results, lignin palmitate has the potential to be developed as a coating material, for example in food packaging applications.
lignin barrier properties packaging, palmitic acid coating
Eva-Lena Hult Klaus Koivu Pauli Wrigstedt Jarmo Ropponen Janne Asikkala Jussi Sipil(a) Tarja Tamminen Kristiina Poppius-Levlin
VTT- Technical Research Centre of Finland, P.O. 1000, FI-02044 VTT, Finland University of Helsinki, Department of Chemistry P.O. Box 55, FI-00014 University of Helsinki, Finlan
国际会议
16th International Symposium on Wood,Fiber and Pulping Chemistry(第十六届木材、纤维及制浆化学国际会议)
天津
英文
253-256
2011-06-08（万方平台首次上网日期，不代表论文的发表时间）