ƽԷֱָÿɲõʵʽ֣ƽͳ塣
6ʵⶨͬȻֱܷΪ25.840.1353.5053.9054.3KJ.mol-1ԪϩΪ25.08KJ.mol-1,
1¸߷ʱθΪ̼ԭ 2ȻӦڣηԼΪ 7PS120OCʱճΪ1.3443107Pa2sWLF̹160OCʱճȣPSTg=100OC
8ţ壬壬ߣ?д Ӧĺʽ
9ʲôзţͼ?иܶȾϩ̼ȹ۱ϩ;ۼϩָ߾ָЩ߾ճȶ¶ȵԴЩ߾ճȶԼʵԴ? Ϊʲô?
10ͼʾƽаճȼУճΪ?103Pa.?s?ĸ߷,Ҫʹ10-2m.s-1ĽƽƣҪƽа2.54310-3mΪ6.45310-4m2
ͼ6-5 ƽаճȼʾͼ
߷ҺʼӦ
һ
1ͣͣ
2
3ճؾZ 4ɢֲֲָָ 5˹ڶάϵܶȲ 6أȣ 7
8֣УߣУ 9ܼ¶ȣҺ 10ճͶ
11ճȣ˹̹ճȶ 12ͻѧ
13ɢ䣻ɢ䣻 14ѧλ
15ٽ繲¶ȣٽ繲¶ȣٽ繲¶ 16ų 17Чֱ 18immͼ
19ֲֲֲַַַ 20ڸ棬 21ɫ ж
1ָ߾ǵɢΪ aHDPE bPVC cDNA
2ѹõƽΪ
a bճ cؾ 3ɢָdȡֵΪ a1 b>1 c0
4GPCⶨ߾ʱϴͷ¹ϵ alogM=A-B Ve bM=A-BVe clogM=A-BlogVe 5ɢԾۺͳƽĹϵΪ aMn=Nw=N=Mz bMz>Mw>M>Mn cMz>M>Mw>Mn
6߾һ£ܼ¶ȣɦҺʱ
ٴ֮<С֮<С֮. ڴ֮>С֮>С֮ ۴֮=С֮=С֮ ֮<С֮<С֮
7 ǿԵĽᾧ߾ܽ⣬ǼԵĽᾧ߾ֻмȵTmܽ⣨
8ڻصĹ, һ൱С,ֲС( )
9иеڱϺʵ (1) ֲߺͳƽ a. Mn b.ؾ Mw c.Z Mz d.ճ M
ͼ7-1 ֲ (2) ѹ a.ܼ b.ܼ
ͼ7-2 ѹ (3) GPCУ a֧ϩ b;ϩ
ͼ7-3 GPC
1ɫǰӵģ СͬķӷֿġַԵõ ͣ ȷԼ ݡ
2ڸ߷Һпɣ жϸ߾Һ̬ ӵijߴ硣
3붳ıڣ
4߷ƽĶ֣ѧʽֱǣ ͣ 5ѹõǣ ճȷõǣ 6ɢ߾ͳƽĴСΪ ɢ߾ͳƽĴСΪ Mark-Houwinkָ=1ʱ =-1ʱ 7붳ıǰߵĽΪ ߵĽΪ
8߾ܽһ֣ ͣ Ρ ġ ⣨⣩ 1ܶȲ 2Huggins 3ڶάϵе
4MarkHouwink̵壬, ֵЩй
5ƽ̵ⷽ弰 6߷ӵܽͷʲôͬ
7FloryHugginsģ͵Ļ˼롣 8FloryKrigbaumϡҺۡ
9߷Һʲô뽺ͷҺһȽϣ֤һҺ 10ܶȲβⶨѧԭͷǼԾۺΪʲôܹܽܶȲܼС
11ͨڶۺϵľ۱ϩк95Ĺ壬۵Լ438449֮䣬ѡʵܼԾָӦע۷ϩķϩҵʵܼӷӽṹνͣ
12ϰ߷ۻֲ(M)ĺֲ(M) 13ѹⶨķΪʲôʲô 13߾ҺҺΪнϴƫ˵
14GPCⶨֲʵװü۸ݣٳһַļ㷽
15FloryHugginsѹ̺ͷ»巽ֱ̣- ȺP-V ʾߣ¶ȵĹϵָߵĺּ֣ܼV 16Һճ¶ȵ߶½߷Һճڲܼ¶ȵ߶ߣ⣿ 17ɲܶȲ£ȼ1= 19.8ͪ1 =20.2 PVC2=19.2ԶĦ1ȻͪĦ1ӽPVCĦ2ʵǰ߶PVCܽܲãPVCҺΪʲô
18һۼϩGPCⶨѡܼдn,Mw[]IJ衣
19FloryHuggins?ͳѧƵ߷ҺĻءSm=- K(N1ln1+N2ln2)ҺءSmi=-K(N1ln1+N2ln2)ĹУкβ
20VanthoffRTc/MϡҺȡʵһŨȵҺʽһƫοУһƫ
21FloryHugginsģʹ߷ҺóҺĻѧλΪ 1=RT[ln(1-2)+(1-1/1)2+122
ԴӸʽƵڶάϵA2=(1/2-1)/V12V1 ܼƫ˷ 22ʲôǦ¶ȣһҺϵ¶ʵⶨģ۸߷ӵҺڸڡڡڦ¶ʱѧΣ߷Һijߴ̬Σ
23߷ҺЩйأ?ԱȽҺĻصıʽкβ𣿻ضԸ߷ӵܽãں