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HEC (NATROSOL¢ç / Hydroxy Ethyl Cellulose)¶õ? |
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HEC´Â ÀÏÁ¾ÀÇ ºñÀ̿¼º ¼ö¿ë¼º°íºÐÀÚ (Non ionic water soluble polymer)ÀÌ´Ù.
ÀÔÀÚ»ö±òÀº ÇϾá»öÀÌ°í °ú¸³¸ð¾çÀÇ ÆÄ¿ì´õ Çü½ÄÀ¸·Î µÇ¾îÀÖ´Ù. HEC NATROSOL 250Àº À¯±â¿ë¸Å¿¡´Â ºÒ¿ë¼ºÀ» ¶ì°í ÀÖ°í, Âù¹°°ú ¶ß°Å¿î ¹°¿¡ ½±°Ô ¿ëÇØµÇ¸ç ´Ù¾çÇÑ Á¡µµ¸¦ Áö´Ï°í ÀÖ´Ù. HEC´Â ÈÇÐÀûÀ¸·Î Cellulose À¯µµÃ¼À̸ç ÇÏÀ̵å·Ï½Ã¿¡Æ¿±â(Hydroxy ethyl group)°ú ÇÔ²² ¿¡Å׸£È(etherification)À» ÀÌ·ç°í ÀÖ´Ù.
ÁÖ·Î ÁõÁ¡Á¦, º¸È£ ÄÝ·ÎÀ̵åÁ¦, ¹ÙÀδõ, ¾ÈÁ¤Á¦, À¯ÈºÐ»êÁ¦µîÀÇ ¿ëµµ·Î »ç¿ëµÇ¾î Áø´Ù. |
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HECÀÇ ¸í¸í¹ý (Nomenclature) |
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250HHR ó·³ ¸ðµç µî±ÞÀº R·Î¼ µðÀÚÀÎ µÇ¾î ÀÖ´Ù. NATROSOL Bµî±ÞÀº »ý¹°ÇÐÀû ºÐÇØ¿¡ ´ëÇÑ ÀúÇ×´É·Â(bio-stability)¸¦ Áö´Ï°í ÀÖ´Ù. NATROSOL NFµî±ÞÀº ÀǾà»ê¾÷ºÐ¾ß¿¡ Àû¿ëµÇ´Â µî±ÞÀ¸·Î ¾Ë¾à Á¦Á¶½Ã °áÇÕ°ú ¾à°£ÀÇ Á¡Áø·Â °¨¼Ò¿¡ ÀÌ¿ëµÇ°í ÀÖ´Ù. CSµî±ÞÀº °í¼øµµ µî±ÞÀ¸·Î¼ ÈÀåǰ, ¼¤ÇÁ, ÄÁµð¼Å³Ê, ¾×üºñ´©, ¸éµµ Å©¸²µî¿¡ »ç¿ëµÇ°í ÀÖ´Ù. |
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HECÀÇ ¹°¸® ÈÇÐÀû Ư¼º |
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¹é»ö °ú¸³¹°ÁúÀÎ HEC´Â ¹°¿¡ ±Þ¼ÓÇÏ°Ô ºÐ»ê ¿ëÇØµÇ°í, ¹°¿¡ µé¾î°¡¸é Åõ¸íÇÏ°í ºÎµå·¯¿î ¿ë¾×À» Çü¼ºÇÑ´Ù. ¿ë¾×ÀÇ Á¡µµ´Â ¾à°£ÀÇ »ê°ú ¾ËÄ«¸®¿¡ ÀÇÇØ ¿µÇâÀ» ¹ÞÀ¸¸ç ¾ËÄڿÿ¡´Â ºÒ¿ë¼ºÀ̳ª ¹°°ú ¾ËÄÚ¿ÃÀÇ È¥ÇսýºÅÛ¿¡¼´Â ¿ëÇØ°¡ °¡´ÉÇØ Áø´Ù.
¹«¼öÀ¯±â¿ëÁ¦(non-aqueous organic solvent)¿¡¼´Â ´ë°³ ºÒ¿ë¼ºÀ̸ç ÈÇÐÀÛ¿ëÀÌ ¾ø´Ù.
HEC´Â õ¿¬ ¹× ÇÕ¼º°Ë(Gums)·ù¿Í ¶óÅØ½º¿¡¸ÖÁ¯(latex emulsion)¿¡ À¶È¼ºÀ» Áö´Ï°í ÀÖ´Ù. |
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Table. Solubility behaviour in organic solvents. |
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at 25¡É |
at 55~60¡É |
Alcohols
Methanol (anhydrous)
Ethanol (anhydrous) |
Insoluble
Insoluble |
Insoluble
Insoluble |
Ethanol : Water
7:3 by weight
6:4 by weight
3:7 by weight |
Partially soluble
Partially soluble
Soluble |
Partially soluble
Partially soluble
Soluble |
Esters
Ethyl lactate
Methyl salicylate |
Insoluble
Insoluble |
Insoluble
Insoluble |
Ethers
Methyl Cellosolve
Cellosolve |
Insoluble
Insoluble |
-
Insoluble |
Glycols
Ethylene glycol
Glycerin
Propylene glycol |
Swollen
Swollen
Swollen |
-
Partially soluble
Partially soluble |
Acids
Formic(90%)
Glacial acetic |
Soluble
Insoluble |
-
- |
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