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Lesson 31: Polymers II (MW, DP, viscosity and processing) 31-1: IJIi~~T_ 7tTil~tJ: ~7t~0) 1liil-f*¥fft ~7tT3itf-t­ ~~~7tTil mil~~7tTil z~~7tTil :iF~-tt Ii5Jfl~ll ~1lJ:t Will~~7tTil ~~J±~ 7t~!L~ tt~~jj~ ?lIJ)E7t~* *0) 1I7tmfi 7tTil7tffl~~ 7t~!L m~JL\m tt~~iJ 7tTfi:iF~-ll mil7t$ x-7·*-9,{/7- ~EHO)~~J:t Hitf-t-~-f* 31-4: .~ll -~t~ t) llltl~l ~~f$}m~~ maSJIt$)m-@;J3t zSJIf$}m~J3t -:f/~ J) 3 ryT=r-tJ: ~-:f/~/O) ~ / J) 3 9 ~ 1 ~ /1 :J ry -:f/ ~ ~ J) 3 9 Ary~1=r-/-:f/~I) 39 ~ .:z. 9 J) 3 9 ~1 =r- /:1/ ~ J) 3 9 z ~1 =l=-/-:f/~ J) 3 9 7=l=-/1~1!1 :J:z.9*/~ */~~=l=- *'/~~1 =l=-/7·/~J) 39 ~/~97~*9 DtJ~ t)~/7 /*9 7/:J9~1:J9*9 'J7T1:J97J771 ~~1 (J) t:7·/ ~ .:z. 9 J) 3 9 7·/~ J) 3 97·//j:] /A ry DiJ~t)~/7/ 73'7I/~/=f 7/:J9~1:J9 7· / ~ J) 3 ry 7 =f /1 'Y ~ ~ .:z. 9 J) 3 '7 -:f/ J) ~ x-7-*-9,{/7- ~ ir~v) Jr'Y~3r)·1::::~3r) ='Jr):Jr)'.Ir) v-S" ~ ~ 3 rJ ~ '"tJ];.-:J rJ '.1'7 :\=-/\7 3rJI~ 1'/~3 '7~3 ry 7;(7~3'7 T/~-7/r:=f-3ry :t3 ~ t~t~tr :t3 tJ t~ t~ ~:J ry'.Iry :t3 tJ t~ t~ ~ -.f7'/ t: ~ 3 rJ-r:1=-tJ: T1'"t'Y Jr'Y~3rytJ:;3ryJr/ tJ V1:\=-~ 7 ~ ())LF~~~Jr'Y~3ry :JryY'YtJ (J)LF~Q -321crystallization spherulite crystalline portion (molecular) chain to put in order, to arrange, to make uniform one (chain) at a time partial chain crystal analysis basic/fundamental unit local structure spherical protein amorphous/noncrystalline portion vinyl polymer head-to-head bond tail-to-tail bond stereochemical structural irregularity poly(methyl methacrylate) isotactic syndiotactic stereoregular polymer atactic poly(vinyl alcohol) hydrogen bond under external stress shish-kebab structure crystal morphology oriented crystallization entire/total length direction of the molecular chain axis order of magnitude different crystalline and noncrystalline/amorphous two-phase structure fringed micelle structure dilute solution plate-like crystal lamellar crystal electron microscope to fold up, to fold into layers folded structure folded portion amorphous, noncrystalline established theory/explanation crystallization conditions degree of supercooling extended chain crystal under high pressure to extend (out to full length) 31-10: *Ott 7l tJ t~n~ 6 ~1J~fO ~~tt-f* ~7 A?.:r..)V~* 7:t-7~~;« Jr)vl:::/~~ 1J~m~ D}j~t .Q imm7tm 7trfnU JJJ~?j{IJ)E :J//717/A ~5Qitt~~ 31-17: T:fY I'c 1::- ~:f-'J~Oe­ :J 01 ~* ~iIUi6{ m~ i6{~ ',/Jv J:TJv~ ~i-~ :JD1 ~f4~~ ~~1J$¥J;m l/~ 0 ~-B"JJt!1B ~7H~tm 31-18: ~;rIJ =\=-.:z.t)~1 .Q.t;t)jJ1T/~/~t) ~·/t1~1t/ .Q.t;t)7J1T/~::z.t)~/~t) ~1 At)7/A1 ') 'Y T1jJ~.:z.t) */t1 ').:z.t) 75(-t/At) //~'J .:z.9 ~ t) ') 3 7 fJ / r; */~·/t1~1 ~ 7 At) x)v 3 t)'j 7;;t-7~3t)'j Jr)vl::: / 3 t)'j 1) :f-117 1::Jr1 t~9~t~ l//Y77·/7 //yo/ ~t)T=l=-'j7T1 :J 01 ~Jr1 Jr /~. 7 I.=l=fJ 7 J\/ I.=l=-~3? 7JV~39 T19~ ::JD1~jJjJ7~~ ~'YJr/*t)*t) y/'j? l/~D~-T=l=-Jr/:r ~t)~/~3t)~1 -324spherical body, sphere torsional and rotational vibration fine elastic thread torsional and rotational free vibration logarithmic attenuation fixed/constant load viscous flow Knudsen number molecular flow although (it is) stress relaxation viscoelastic body Maxwell element Voigt element lCelvinelement .mechanical model to assist, to help continuous distribution molecular theory dynamic measurement compliance viscoelastic function thixotropy colloidal system suspension agitation, mixing, stirring in the form of a liquid sol in the form of a gel to present, to offer, to display colloid scientist experimental method truth, real situation rheological viewpoint/standpoint isothermal state minute amount limit, bound, end [3.145.94.251] Project MUSE (2024-04-25 14:41 GMT) Meif~~m cc*.g 1i;W.~fI~ 2~fm't1~J~­ ~~fre't1~J~­ ifli7t-=f~~7)v m~~~ J:!)v-f*fl ~J8 ~iIMeif~tt .mm~ 3-Fm1l1J rmft~-f* Meif~tt q:.f£r&i7t-=f 3-FmlllJilll ~POO~ 1~/'t1 m*£ ~~J:!)v l&~~rm ~f~a m*£*ll EEq:.~- ~ 1) 7 7 1) )v7 2 ~ $7t~1JD7JtJ:71...

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