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页数:6页
时间:2019-02-26
《壳聚糖金属配合物的防腐性能》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、维普资讯http://www.cqvip.com第40卷第6期林业科学Vo1.40.No.62004年11月SCIENTIASILVAESINICAENov.,2004壳聚糖金属配合物的防腐性能*段新芳孙芳利(中国林业科学研究院木材工业研究所JL-.q,100091)(浙江林学院临安311300)朱玮赵砺(西北农林科技大学杨凌712100)摘要:壳聚糖金属聚合物[如壳聚糖铜聚合物(CCC)和壳聚糖锌配合物(CZC)]是壳聚糖和金属盐类反应生成的一种新型有机高分子聚合物。用CCC和CZC与铜铬砷(
2、CCA)分别处理马尾松和毛白杨边材,进行木材防腐试验,结果表明:CCC和CZC对褐腐菌棉腐卧孔菌的防腐性能与CCA相比,CZC达到最耐腐等级,防腐效果接近CCA,其锌离子临界保持量为0.780kg·m。(腐朽后质量损失1.18%),但CCC防褐腐效果明显不如CZC;CCC对白腐菌彩绒革盖菌的防腐性能达到最耐腐等级,防腐效果接近CCA,其铜离子临界保持量为0.824kg·m。(腐朽后质量损失2.45%);CZC和氯化锌对白腐菌的防腐效果不明显。关键词:壳聚糖金属配合物,毛白杨,马尾松,防腐性能中图
3、分类号:$782.33文献标识码:A文章编号:1001—7488(20o4)06—0138—06DecayResistanceofWoodTreatedwithChitosanMetalComplexDuanXinfangSunFangli(ResearchInstituteofWoodIndustry,CAFBeifinglO0091)(ZhejiangForestryCollegeL/n'an311300)ZhuWeiZhaoLi(NorthwestUniversityofAgricultu
4、reandForestry,ing712100)Abstract:Chitosan,anaturalandrenewablepolymerwithouttoxicandpollutiontohumanbeingsandenvironmentandthedeacetylatedderivativeofchitinthatmainlyexistinthecrustsofcrabsandshrimps,hasmanygoodcharacteristicsandusedintomanyfieldssuc
5、hasagriculture,medicine,chemistry,etc.Chitosanmetalcomplex(CMC),onenewpotentialwoodpreservative,whichproducefromthechemicalreactionbetweenchitosanandsomemetalsaltssuchascopperorzincsaltsareshowntobeeffectivebutlow—toxicitypreservativesforwood.Thispap
6、erreportedthedecayresistanceofPinusm,as$on~n~tandPopulustomentosatreatedwithchitosancopper/zinccomplex(CCCandCZC)againstthebrownandwhiterotfungi.TheresultsshowedthatthedecayresistanceofCZCagainstbrownrotfungi(Poriaplacenta)treatedtoP.ma.~onianawoodwe
7、reequivalentwithCCA,andremarkablybetterthanthatofonlytreatedbyrelevantmetalsaltsandchitosan,butCCChadlittleefectivenessagainstbrownnotfungus.ThethresholdretentionofzincioninCZCtreatingsolutionwas0.780kg·m-3(massloss1.18%);alsodecayresistanceofCCCagai
8、nstwhiterotfungi(Cor/o/ousvers/co/or)wasequivalentwithCCA.andremarkablybetterthanthatofonlytreatedbyrelevantmetalsaltsandchitosan,whiletheCZCagainstwhiterotfungiwasnotgod.ThethresholdretentionofcopperioninCCCtreatingsolutionwas0.824kg‘m(massloss2.45%
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