私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關(guān)鏈接
聯(lián)系方式
  • 通信地址:浙江理工大學(xué),材料與紡織學(xué)院,先進(jìn)紡織材料與制備技術(shù)教育部重點實驗室
  • 郵編:310018
  • 電話:0571-86843071
  • 傳真:0571-86843082
  • Email:342099315@qq.com
當(dāng)前位置:> 首頁 > 論文著作 > 正文
Fully biodegradable food packaging materials based on functionalized cellulose nanocrystals/ poly(3-hydroxybutyrate-co-3-hydroxyvalerate) nanocomposites
作者:Houyong Yu, Chenfeng Yan, Juming Yao
關(guān)鍵字:cellulose nanocrystals/ poly(3-hydroxybutyrate-co-3-hydroxyvalerate)
論文來源:期刊
發(fā)表時間:2015年
Current packaging materials (mainly composed of petroleum-based synthetic polymers) face environmental and disposal issues, and as a result, developing eco-friendly and bio-based nanocomposites as alternatives have motivated academic and industrial research. We report here on our effort to develop a transparent nanocomposite-based packaging film comprised of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and functionalized cellulose nanocrystals (cellulose nanocrystal methyl ester, CNC-me). The resultant CNC-me with hydrophobic ester groups are uniformly dispersed in PHBV without the aid of a compatibilizer or surfactant. Therefore, both the crystallization temperature and crystallinity of the PHBV matrix were increased due to the heterogeneous nucleating effect of CNC-me. With an increase of CNC-me concentration, significant improvements in mechanical performance, thermal stability, barrier and migration properties were achieved, which were ascribed to the improved interfacial interaction and increased crystallinity. Compared to neat PHBV, the tensile strength and maximum decomposition temperature (Tmax) of the nanocomposites all achieved their maximum values at loading levels of 20 wt% CNC-me. Meanwhile the overall migration levels in both non-polar and polar simulants were well below the limits required by the current legislative standards for food packaging materials.

主站蜘蛛池模板: 洞头县| 孟津县| 济南市| 同江市| 麦盖提县| 中方县| 涡阳县| 屯门区| 依兰县| 河池市| 巍山| 黎川县| 枞阳县| 万源市| 偏关县| 梁河县| 延寿县| 金昌市| 台中县| 永城市| 杭州市| 托克托县| 云和县| 雅安市| 韶关市| 昆明市| 田东县| 古田县| 太仆寺旗| 鞍山市| 随州市| 怀远县| 左云县| 威信县| 昌黎县| 安图县| 林口县| 桓台县| 吴忠市| 花垣县| 唐山市|