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gianthai

½ð³æ (ÕýʽдÊÖ)

[½»Á÷] PHEMAÔõôÄý½ºÁË£¿

ÎÒÓÃATPR·½·¨µÃµ½PHEMA,·´Ó³Î¶È60¶È£¬CuBr/PEDETA,µ«µ±ÎÒ×îºó´òÈëPMDETAµÃʱºò£¬ÌåϵѸËÙ¾ÍÄý½ºÁË¡£³Ê¹û¶³×´£¬ÎÒÓÖÔÚÊÒÎÂÏ·ÅÁËÒ»Ò¹¡£µÚ¶þÌìÎÒÓü״¼½þÅÝ£¬È´ÔõôҲ²»ÄÜÈÜ¡£Ê²Ã´Ô­Òò°¢£¿

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[search]HEMA[/search]
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wmx

ľ³æ (ÖøÃûдÊÖ)

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2Â¥2007-06-04 13:06:59
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domotach

Ìú¸Ëľ³æ (СÓÐÃûÆø)

what kind of solution were you used? PHEMA is easy to get geled in ethonal solution.
3Â¥2007-06-04 21:28:38
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mengzhiyong

½ð³æ (СÓÐÃûÆø)

Have you used any kind of cross-linking agent such as N,N'-methylene bis(acrylamide), or ethylene bis(methyl acrlyate)? If you did NOT use any cross-linking agent, the possible reason would be the hydrogen bonding between hydroxyl groups on your pHEMA side chains at specific solvent. Let us know what solvent you use for the polymerization. BTW, ATRP is not that good for polar goup-containing monomers.
4Â¥2007-06-05 00:06:25
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