摘要
采用微波加热的方法,利用硅烷偶联剂KH-550开展对水处理应用中易于降解的丝瓜络进行表面改性的研究。拟通过减少纤维表面的羟基,以降低丝瓜络的亲水性,达到提高纤维耐微生物腐蚀性、延长使用寿命的目的。结果表明,碱预处理对丝瓜络的吸湿性能影响显著(P<0.01),增加纤维表面的粗糙度,有利于后续的改性;通过NaOH和KH-550的质量分数分别为2%和5%,浸泡和微波反应时间分别为60 min和60 s条件下的改性,丝瓜络的吸水率比未改性时下降了22.43%;正交实验表明,微波处理时间和KH-550含量这2个因素对改性效果的影响显著(P<0.01);对丝瓜络改性效果的影响大小顺序为:KH-550含量>微波处理时间>NaOH含量>浸泡时间;优化条件为:NaOH和KH-550的质量分数分别为2%和1%,浸泡和微波反应时间分别为30 min和180 s。
In this research, the microwave heating method combined with KH-550 was used to obtain interface coupling modification of luffa sponge that susceptible to degradation in water treatment applications. The aim was to reduce the hydrophilic of luffa sponge and to improve its resistance to microbial resistance, prolonging the service life by reducing the hydroxyl groups. The results showed that the alkali treatment could significantly affect the ability of moisture sorption of the fibrous material （P〈0.01）, increase surface roughness of the fiber, and facilitate the subsequent modification; The water absorption of the fiber material dropped by 22.43% and hydrophilicity was in an obviously decrease under the set of modification conditions that 2% of alkali mass fraction, 5% of monomer mass fraction, 60 min of soak r6action time, and 60 s of microwave reaction time; The orthogonal test results showed that microwave processing time and KH-550 content significantly affected modification effect （P〈0.01）, and the order of importance in modification was： monomer mass fraction〉 microwave treatment time〉alkali mass fraction〉soak time; And the optimal conditions of orthogonal test was： 2% of alkali mass fraction, 1% of monomer mass fraction, 30 min of soaking time, 180 s of microwave time.
出处
《水处理技术》
CAS
CSCD
北大核心
2014年第5期73-78,共6页
Technology of Water Treatment
基金
国家自然科学基金项目(51178452,50808172)
国家水体污染控制与治理科技重大专项(2009ZX07106-002,2012ZX07101007-005)
城市河道污染控制及生态修复创新团队建设(2012F20016)
关键词
丝瓜络
微波处理
硅烷偶联剂
界面偶合改性
NAOH
水处理
luffa sponge
microwave treatment
silane coupling agent
interface coupling modification
NaOH
water treatment
