°íºÐÀÚ ÈÇÐ/°íºÐÀÚÀÇ ±âÃÊ/ À¯¸® ÀüÀÌ ¿Âµµ
¹«Á¤Çü °íºÐÀÚÀÇ °Åµ¿ - ¹«Á¤Çü °íºÐÀÚ¸¦ °¡¿Çϸé
À¯¸®ÀüÀÌ ¿Âµµ (glass transition temperature), Tg
ÀÏÂ÷ ÀüÀÌ ¿Âµµ (first-order transition temperature)
ÀÌÂ÷ ÀüÀÌ ¿Âµµ (second-order transition temperature)
ºñºÎÇÇ º¯È
À¯¸®ÀüÀ̿µµ, Tg ¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â ¿äÀÎ
(1). °íºÐÀÚ »ç½½ÀÇ Ä¡È¯±âÀÇ Å©±â
(2). ġȯ±âÀÇ ±Ø¼º
(3). ¼ö¼Ò°áÇÕ
(4). º¥Á¨ °í¸® µî ¹æÇâÁ· °í¸® Á¸Àç ¿©ºÎ, µî
À¯¸® ÀüÀÌ ¿ÂµµÀÇ ÀÇ¹Ì¿Í °íºÐÀÚÀÇ ÀÀ¿ë
Ç¥ 1. ¸î¸î °íºÐÀÚµéÀÇ À¯¸® ÀüÀÌ ¿Âµµ (Tg)
´Ü·®Ã¼ À̸§ °íºÐÀÚ
¹Ýº¹´ÜÀ§ Tg(¡É) |
polyethylene |
|
-20 |
polypropylene |
|
5 |
poly(1-butene) |
|
-24 |
poly(1-pentene) |
|
-40 |
poly(1-hexene) |
|
-50 |
poly(1-heptene) |
|
-31 |
poly(1-decene) |
|
-41 |
poly(1-dodecene) |
|
-6 |
poly(3-methyl-1-butene) |
|
50 |
poly(4-methyl-1-pentene) |
|
29 |
poly(3,3-dimethyl-1-butene) |
|
64 |
poly(5-methyl-1-hexene) |
|
-14 |
poly(4,4-dimethyl-1-pentene) |
|
59 |
poly(vinyl n-butyl ether) |
|
-55 |
poly(vinyl t-butyl ether) |
|
88 |
poly(vinyl chloride) |
|
81 |
poly(vinyl alcohol) |
|
85 |
polystyrene |
|
100 |
poly(2-vinylnaphthalene) |
|
151 |
poly(4-vinylpyridine) |
|
142 |
Ç¥ 2. °íºÐÀÚÀÇ ÀÔü ±¸Á¶¿Í À¯¸® ÀüÀÌ ¿Âµµ¿ÍÀÇ °ü°è.
°íºÐÀÚ |
Tg
(¡É) |
½Åµð¿ÀŹƽ, ¾ÆŹƽ, À̼ÒŹƽ |
poly(methyl methacrylate) |
105 105
38 |
poly(ethyl methacrylate) |
65 65
12 |
poly(t-butyl methacrylate) |
114 118
7 |
polypropyleneb |
-4 -6
-18 |
polystyrene |
100c 99c |
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