¹«Á¦ ¹®¼­
 
 
   
  HEC (NATROSOL¢ç / Hydroxy Ethyl Cellulose)¶õ?
 

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.

 
 
   
  HECÀÇ ¸í¸í¹ý (Nomenclature)
 

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.

 
 
   
  HECÀÇ ¹°¸® È­ÇÐÀû Ư¼º

 

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.

 
 
Table. Solubility behaviour in organic solvents.
  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

-
-