陕西科技大学学报（自然科学版）
陝西科技大學學報（自然科學版）
협서과기대학학보（자연과학판）
JOURNAL OF SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY
2015年
4期
18-22
,共5页
杜敏%姜桥%李新平%张丹
杜敏%薑橋%李新平%張丹
두민%강교%리신평%장단
NCC%淀粉%复合薄膜%拉伸强度%吸湿率
NCC%澱粉%複閤薄膜%拉伸彊度%吸濕率
NCC%정분%복합박막%랍신강도%흡습솔
NCC%starch%composite film%tensile strength%moisture absorption
以漂白阔叶木纤维为原料，采用浓硫酸水解法制备了纳米晶体纤维素（NCC），并通过粒径测定、Zeta电位分析等对NCC的性能进行了测试．采用流延刮膜法制备了淀粉／NCC复合薄膜，通过测定复合薄膜的结晶性能、力学性能、热性能和功能性等研究了NCC的添加对薄膜性能的影响．研究结果显示：浓硫酸水解法制得的NCC溶液为胶体溶液，其Zeta电位为－33．7 mV ，平均粒径为202．6 nm ；随着NCC添加比例的增加，复合薄膜的结晶度有所增加，热稳定性和透明度下降，拉伸强度先增加后下降，当NCC添加8％时，其拉伸强度增加到最大值3．69 M Pa ，较纯淀粉薄膜增加了46．43％；NCC可以赋予薄膜更好的耐水性和水蒸气阻隔能力，当NCC添加10％时，吸湿率下降到60．34％，水蒸气透过量下降到236．78 g／24h · m2，分别较纯淀粉薄膜下降了11．93％和28．71％．
以漂白闊葉木纖維為原料，採用濃硫痠水解法製備瞭納米晶體纖維素（NCC），併通過粒徑測定、Zeta電位分析等對NCC的性能進行瞭測試．採用流延颳膜法製備瞭澱粉／NCC複閤薄膜，通過測定複閤薄膜的結晶性能、力學性能、熱性能和功能性等研究瞭NCC的添加對薄膜性能的影響．研究結果顯示：濃硫痠水解法製得的NCC溶液為膠體溶液，其Zeta電位為－33．7 mV ，平均粒徑為202．6 nm ；隨著NCC添加比例的增加，複閤薄膜的結晶度有所增加，熱穩定性和透明度下降，拉伸彊度先增加後下降，噹NCC添加8％時，其拉伸彊度增加到最大值3．69 M Pa ，較純澱粉薄膜增加瞭46．43％；NCC可以賦予薄膜更好的耐水性和水蒸氣阻隔能力，噹NCC添加10％時，吸濕率下降到60．34％，水蒸氣透過量下降到236．78 g／24h · m2，分彆較純澱粉薄膜下降瞭11．93％和28．71％．
이표백활협목섬유위원료，채용농류산수해법제비료납미정체섬유소（NCC），병통과립경측정、Zeta전위분석등대NCC적성능진행료측시．채용류연괄막법제비료정분／NCC복합박막，통과측정복합박막적결정성능、역학성능、열성능화공능성등연구료NCC적첨가대박막성능적영향．연구결과현시：농류산수해법제득적NCC용액위효체용액，기Zeta전위위－33．7 mV ，평균립경위202．6 nm ；수착NCC첨가비례적증가，복합박막적결정도유소증가，열은정성화투명도하강，랍신강도선증가후하강，당NCC첨가8％시，기랍신강도증가도최대치3．69 M Pa ，교순정분박막증가료46．43％；NCC가이부여박막경호적내수성화수증기조격능력，당NCC첨가10％시，흡습솔하강도60．34％，수증기투과량하강도236．78 g／24h · m2，분별교순정분박막하강료11．93％화28．71％．
Taking Bleached Hardwood Fiber (BHF) as raw material ,nano‐crystals cellulose (NCC) was prepared using the method of acid hydrolysis by concentrated sulfuric acid .By measuring the diameter and Zeta potential of the NCC ,the properties of NCC were meas‐ured .Starch/NCC composite film was prepared using the method of tape casting .By measur‐ing the changes of crystal properties ,mechanical properties ,thermal properties and function‐ality of the composite film ,the effect of the NCC on film properties was studied .The results showed that the solution of NCC prepared by concentrated sulfuric acid hydrolysis was colloi‐dal solution .The Zeta potential of the solution was -33 .7 mV ,and the average particle size was 202 .6 nm .With the increasing proportion of NCC ,the crystallinity of the composite film increased ,thermal stability and light transmittance declined ,tensile strength of the composite film first increased and then decreased .When the NCC added 8% ,the tensile strength in‐creased to a maximum of 3 .69 MPa ,increased by 46 .43% compared with the pure starch films .NCC could give the film better water resistance and vapor barrier capability .When the NCC added 10% ,the ratio of moisture absorption dropped to 60 .34% and the water vapor transmission dropped to 236 .78 g/24 h · m2 ,decreased by 11 .93% and 28 .71% compared with the pure starch films respectively .
