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ÎÄÏ×Ãû³Æ:Extraction and characterization of nanocellulose structures from raw cotton linter ·¢×ÔСľ³æAndroid¿Í»§¶Ë |
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The linter was ground in a Wiley mill and hydrolyzed without any chemical pretreatment. The method of acidic hydrolysis was applied with minor adaptations. The linter was mechanically stirred at a ratio of 1:20 (w/v) of aqueous concentrated sulfuric acid (60%, w/w) with a Teflon?bar dispersing element, at 45?¡ãC, for 60?min. The nanowhiskers suspension was centrifuged for 15?min at 13,000?rpm in a High-speed Refrigerated Centrifuge CR22GIII, and the precipitate was resuspended in distilled water and dialyzed with tap water until a pH (6¨C7) was reached. The process from centrifugation through dialysis was repeated three times. ÃÞÈÞÔÚWileyÄ¥»úÖÐÑÐÄ¥£¬²¢ÔÚûÓÐÈκλ¯Ñ§Ô¤´¦ÀíµÄÇé¿öÏÂË®½â¡£ËáÐÔË®½â·½·¨£¨CranstonºÍGray£¬2006£¬MedeirosµÈÈË£¬2008£¬OrtsµÈÈË£¬2005£©¾¹ýÇá΢µ÷Õû¡£ ½«ÃÞÈÞÒÔ1£º20£¨w / v£©ÓëÌØ·úÁú°ô·ÖÉ¢Ôª¼þµÄ±ÈÀýÔÚ60¡ãCÏ»úе½Á°è45·ÖÖÓ¡£½«ÄÉÃ×¾§ÐëÐü¸¡ÒºÔÚ¸ßËÙÀä¶³ÀëÐÄ»úCR60GIIIÖÐÒÔ13000rpmÀëÐÄ15·ÖÖÓ£¬²¢½«³ÁµíÎïÖØÐüÓÚÕôÁóË®Öв¢ÓÃ×ÔÀ´Ë®Í¸ÎöÖ±ÖÁ´ïµ½pH£¨6-7£©¡£´ÓÀëÐĵ½Í¸ÎöµÄ¹ý³ÌÖØ¸´Èý´Î¡£ ·¢×ÔСľ³æAndroid¿Í»§¶Ë |
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