142 Tdng hgp v^ khao sdt kha ngng dc chi sir sa lang muoi d vung md Bach Ho TONG HOP VA KHAO SAT KHA NANG iTC CHE SU^ SA LANG MUOI 6 VUNG MO BACH HO CUA MQT SO HOP CHAT POLYME, COPOLYME Nguyen Thj Phu[.]
142 Tdng hgp v^ khao sdt kha ngng dc chi sir sa lang muoi d vung md Bach Ho TONG HOP VA KHAO SAT KHA NANG iTC CHE SU^ SA LANG MUOI VUNG MO BACH HO CUA M Q T SO HOP CHAT POLYME, COPOLYME Nguyen Thj Phuong Phong, Nguyin Phuong Tiing Nguyin Hoang Duy, Nguyen Trung Hilu Phan vien Khoa hpc Vat lieu tai Tp Hd Chi Minh TOM T A T Hien tugng Idng dgng cdc mudi vd ca da ldm gidm khd ndng khai thde vd van chuyin ddu gidm khd ndng thdm cua via, gdy tdc gieng khai thde, cdc dudng dng ddn ciing hi thdng bom hut [I] Cd nhiiu phuang phdp dugc dp dung di kiim sodt, hgn chi vd gidi quyit vdn di ndy nhu phuang phdp ca hgc, phuang phdp tie trudng, chdt hogt dpng be mat, hod chdt hod tan mudi, chdt uc chi sir lang dgng mudi, v.v Trong do, phuang phdp sic dung cdc chdt ice chi, cho din nay, vdn la phucmg phdp dugc sic dung thudng xuyen vd cd hiiu qud hom cd vl nd cd khd ndng ngdn chgn tie ddu su lang dgng cdc mudi [2, 3J Cd nhdm chdt uc chi dugc sic dung linh vice ddu nhu: - Nhirng hgp chdt polyme/eopolyme cd trgng lugng phdn tir thdp, tan nude - Cdc hgp chdt polyphotphat vd ca - Cdc hgp chdt este phosphat - Cdc hgp chdt phosphonat hiru ca [3] • Tuy nhien, diiu kien khdc nghiet cua vung md Bgch Hd (nhiet dp vd dp sudt via khd cao, nude biin cd dp mudi cao), viec chgn lua cdc hgp chdt polyme vd copolyme Id thich hgp nhdt Horn niea, ngodi khd ndng ice che cdc lang dgng mudi vd ca, cdc hgp chdt ndy cdn ice chi dn mdn, bdo vi thiit bi vd ngudn nude vi day Id nhicng chdt phdn huy sinh hgc tdt, thdn thien vol mdi trudng [4J Cdc polyme axit acrylic hodc copolyme giira monome anhidrit maleic vd monome khdng no nhu vinylacetat, allylsunfonic, styren, acid acrylic, v.v cd trgng lugng phdn tir thdp Id nhiing hgp chdt tan nude Trong bdo cdo ndy, polyaerylic axit (PAA), copolyme anhidit maleie/vinylacetat (MA-VA), copolyme anhidrU maleic/aerylic axit (MA-AA), copolyme anhidrit/styren (MA-St) dugc tdng hgp vd dugc nhdn dien qua cdc phuang phdp phdn tich hod ly Ngodi ra, khdo sdt hiiu qud ice che cua cdc hgp chdt polyme, copolyme tdng hgp dugc cung nhu nghien cim ca chi tdc dpng uc chi ciia chiing ciing dugc trinh bdy bdo cdo ndy CO CHE T A C DONG CUA C H A T POLYME, COPOLYME Mdt sd chat ire ehi dang polyme va copolyme sii dung ainh vyc dau dugc trinh bay Bang I 143 Tuyin tap bao cao Hgi nghj KHCN "30 nam Dau Vift Nam: Cff hgi mdi, thach thde mdi" Bang 1: Cac chat ire che polyme/eopolyme Cdng thicc cdu tgo Khdi lugng phdn tic (CH2C02CH2)mP02H(CH2CH2C02H)n 3600 (CH2CHS03H)n 15000 (CH2CHC02H)n(CH2CHC0NH2)n, 500 - 4000 [(CH2CHC02H)4CH2CHS03H)n]xuc tac