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xgyanger
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- ×¢²á: 2008-09-01
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2Â¥2009-08-26 15:32:59
ppcenter
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A sacrificial initiator,ethyl 2-bromoisobutyrate(EBiB), was also added so that the molecular weight of the grafted polymer could be tailored. EBiB will also initiate polymerizaiton, causing a bulk polymer to form simultaneously to the graft-copolymer from the surface. µ«ºÃÏñsacrificial initiatorÒ»°ãÔÚATRPÖÐÌáµ½ÊǺÍinitiator terminationi²¢´æµÄ |
3Â¥2009-08-26 15:40:45
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4Â¥2009-08-26 15:50:37
ppcenter
Ìú³æ (СÓÐÃûÆø)
- Ó¦Öú: 6 (Ó×¶ùÔ°)
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- ÔÚÏß: 83.2Сʱ
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5Â¥2009-08-26 15:54:41
xgyanger
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ppcenter(½ð±Ò+5,VIP+0):ÓжîÍâµÄÊÕ»ñŶ^_^ 8-26 16:26
ppcenter(½ð±Ò+5,VIP+0):ÓжîÍâµÄÊÕ»ñŶ^_^ 8-26 16:26
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¿ÉÄÜÎÒÃ÷°×ÄãµÄÒâ˼ÁË¡£Äã¿´µÄÓ¦¸ÃÊÇÔÚÓÃsurface initiateµÄ·½·¨×ösurface brush£¬ ²ÉÓÃATRPµÄ·½·¨¡£ºÜ¶àÌåϵÖУ¬ÒòΪ±íÃæ½ÓÖ¦µÄinitiatorÃܶȲ»¹»£¨»òÕß¾ø¶ÔÁ¿Ì«µÍ£©£¬ÔÚºóÐø»îÐԾۺϵÄʱºò£¬³£³£»á±»Ìåϵ²Ð´æµÄO2ʧ»î£¬µ¼ÖÂÊÔÑéʧ°Ü ![]() ÓеÄÈË£¬¾ÍÔÚÌåϵÀïÃæ¶îÍâ¼ÓÁËÒ»²¿·Ö×ÔÓɵÄÒý·¢¼Á£¬Í¬Ê±Òý·¢¡£ÕâÑùʧ»îµÄʱºò£¬ °´ÕÕ¼¸ÂÊ£¬ÖÁÉÙ»áÔÚ±íÃæÉÏÁôÏÂһЩ»îÐÔµÄpolymer chain Õâ¸ö¶îÍâ¼ÓµÄÒý·¢¼Á¾ÍÊÇÆðµ½ÎþÉüO2×÷Óõġ£·ÒëÂð£¿Ò»¶¨ÓÐÈËÓùýµÄ£¬Äã¿´¿´ ²©Ê¿ÂÛÎÄÊý¾Ý¿â... ÄãµÄÀí½âÈçºÎ£¿ [ Last edited by xgyanger on 2009-8-26 at 16:00 ] |
6Â¥2009-08-26 15:58:37
ppcenter
Ìú³æ (СÓÐÃûÆø)
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- ½ð±Ò: 34.3
- ºì»¨: 1
- Ìû×Ó: 185
- ÔÚÏß: 83.2Сʱ
- ³æºÅ: 541246
- ×¢²á: 2008-04-07
- רҵ: ¸ß·Ö×Ӻϳɻ¯Ñ§
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xgyanger˵¶ÔÁË ÎÒ¿´µÄÕýÊÇsurface initiate ATRP·¨ µ«Ö®Ç°Ã»È¥Ïë¹ýËüµÄ¾ßÌå×÷Óà ÄãµÄÀí½â¿ÉÄÜÊÇ¶ÔµÄ ÔÙ½áºÏÏÂÉÏÏÂÎÄ¿´¿´ A sacrificial initiator,ethyl 2-bromoisobutyrate(EBiB), was also added so that the molecular weight of the grafted polymer could be tailored. EBiB will also initiate polymerizaiton, causing a bulk polymer to form simultaneously to the graft-copolymer from the surface. Because the amount of sacrificial initiator is much larger than the amount of initiator attached to the surface, the amount of initiator attached to the surface is neglected, and the molecular weight of the resulting bulk and grafted polymer is only a function of the sacrificial initiator-to-monomer ratio. This is a common method to control the length of the grafts from surface confined initiators. µ«²»´óÀí½âµ¹ÊýµÚ¶þ¾äonly functionÖ¸µÄÄÚÈÝ ¿´À´µÃÕÒÕÒÎÄÏ׿´¿´ xgyangerÊÇ×öATRPµÄô ллָ½Ì¹þ |
7Â¥2009-08-26 16:25:21
xgyanger
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- ÔÚÏß: 385.1Сʱ
- ³æºÅ: 591071
- ×¢²á: 2008-09-01
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8Â¥2009-08-27 11:04:44















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