| ²é¿´: 8083 | »Ø¸´: 8 | |||
cuihuapengľ³æ (ÕýʽдÊÖ)
|
[½»Á÷]
¡¾½»Á÷¡¿¾ÛºÏÎïÖÐPDIÊÇʲôÒâ˼£¨Íê±Ï£© ÒÑÓÐ8È˲ÎÓë
|
|
ÇëÎÊ£¬¾ÛºÏÎïÁ£¾¶²âÊÔÊÔÑéÖÐËù˵µÄPDIÊÇʲôÒâ˼°¡£¿£¿ [ Last edited by cuihuapeng on 2010-5-29 at 20:03 ] |
» ²ÂÄãϲ»¶
281Çóµ÷¼Á£¨0805£©
ÒѾÓÐ8È˻ظ´
»·¾³ÁìÓòÈ«¹úÖØµãʵÑéÊÒÕÐÊÕ²©Ê¿1-2Ãû
ÒѾÓÐ3È˻ظ´
²ÄÁÏר˶306Ó¢Ò»Êý¶þ
ÒѾÓÐ10È˻ظ´
301Çóµ÷¼Á
ÒѾÓÐ6È˻ظ´
Ò»Ö¾Ô¸Ìì½ò´óѧ»¯Ñ§¹¤ÒÕרҵ£¨081702£©315·ÖÇóµ÷¼Á
ÒѾÓÐ7È˻ظ´
302Çóµ÷¼Á
ÒѾÓÐ6È˻ظ´
26²©Ê¿ÉêÇë
ÒѾÓÐ3È˻ظ´
268Çóµ÷¼Á
ÒѾÓÐ3È˻ظ´
311Çóµ÷¼Á
ÒѾÓÐ10È˻ظ´
±»ÎÒÑÔÖУºÐÂÄ£°å²»Ç¿µ÷¸ñʽÁË£¬¼Ùר¼Ò¿ªÊ¼¹Ü¸ñʽÁË
ÒѾÓÐ4È˻ظ´
» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:
ATRPºÍRAFT£¬Çë´ó¼Ò³©ËùÓûÑÔ~
ÒѾÓÐ44È˻ظ´
¡¾½»Á÷¡¿ÇëÎÊ´ó¼ÒÖªµÀPDIÔÚ1-1.3×óÓҵľۺÏÎïô
ÒѾÓÐ4È˻ظ´
×ÔÓÉ»ùÈÜÒº¾ÛºÏµÄPDIºÜ´ó£¬Ôõô°ì
ÒѾÓÐ10È˻ظ´
ÓôÃÆËÀÁË£¬Ôõô×ö·Ö×ÓÁ¿·Ö²¼¾ÍÊÇ¿í
ÒѾÓÐ28È˻ظ´
¡¾ÇóÖú¡¿Waters breeze GPCͼÆ×½âÎö£¿
ÒѾÓÐ22È˻ظ´
¡¾ÇóÖú¡¿RAFT¾ÛºÏ·´Ó¦¿ÉÒÔÔõÑùËõ¶Ì·´Ó¦Ê±¼ä£¿
ÒѾÓÐ8È˻ظ´
¡¾ÇóÖú¡¿¼±£¡£¡¶Ë»ùôÇ»ù¹¥»÷¼ºÄÚõ¥¿ª»·ÎÊÌâ
ÒѾÓÐ17È˻ظ´

QLiu2628
Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 7227.3
- É¢½ð: 599
- ºì»¨: 1
- Ìû×Ó: 1084
- ÔÚÏß: 146.5Сʱ
- ³æºÅ: 592239
- ×¢²á: 2008-09-03
- רҵ: Óлú¸ß·Ö×Ó²ÄÁÏ
PDI:¶à·ÖÉ¢ÐÔÖ¸Êý
¡ï ¡ï ¡ï ¡ï
cuihuapeng(½ð±Ò+2):лл£¡ 2010-05-29 20:01:36
Þ¹Ò²ݶù(½ð±Ò+4):2Â¥½âÊÍ×îÏêϸ£¬Ó¦¸Ã¶à¸øÒ»Ð©~»¶ÓÌÖÂÛ~ 2010-05-29 22:06:37
cuihuapeng(½ð±Ò+2):лл£¡ 2010-05-29 20:01:36
Þ¹Ò²ݶù(½ð±Ò+4):2Â¥½âÊÍ×îÏêϸ£¬Ó¦¸Ã¶à¸øÒ»Ð©~»¶ÓÌÖÂÛ~ 2010-05-29 22:06:37
|
¶à·ÖÉ¢ÐÔÖ¸Êý wikipedia: In organic chemistry, the polydispersity index (PDI), is a measure of the distribution of molecular mass in a given polymer sample. The PDI calculated is the weight average molecular weight divided by the number average molecular weight. It indicates the distribution of individual molecular masses in a batch of polymers. The PDI has a value equal to or greater than 1, but as the polymer chains approach uniform chain length, the PDI approaches unity (1). For some natural polymers PDI is almost taken as unity. The PDI from polymerization is often denoted as: PDI=Mw/Mn Mn is more sensitive to molecules of low molecular mass, while Mw is more sensitive to molecules of high molecular mass. A polymer material is denoted by the term polydisperse if its chain lengths vary over a wide range of molecular masses. This is characteristic of man-made polymers.[1]. Natural organic matter produced by the decomposition of plants and wood debris in soils (humic substances) has also a pronounced polydispersed character. It is the case of humic acids and fulvic acids, natural polyelectrolyte substances having respectively higher and lower molecular weights. |

2Â¥2010-05-29 19:48:56
ËÎÇç´¨
Òø³æ (ÕýʽдÊÖ)
- Ó¦Öú: 4 (Ó×¶ùÔ°)
- ½ð±Ò: 571.8
- É¢½ð: 424
- ºì»¨: 1
- Ìû×Ó: 364
- ÔÚÏß: 362.3Сʱ
- ³æºÅ: 958167
- ×¢²á: 2010-02-28
- רҵ: Óлú¸ß·Ö×Ó¹¦ÄܲÄÁÏ
cuihuapeng(½ð±Ò+2): 2010-05-29 20:01:49
cuihuapeng(½ð±Ò+1): 2010-05-29 20:02:23
cuihuapeng(½ð±Ò+2):лл£¡ 2010-05-29 20:02:40
cuihuapeng(½ð±Ò+1): 2010-05-29 20:02:23
cuihuapeng(½ð±Ò+2):лл£¡ 2010-05-29 20:02:40
| ·Ö×ÓÁ¿·Ö²¼ |
3Â¥2010-05-29 19:49:02
tlmowen09
ÖÁ×ðľ³æ (ÎÄ̳¾«Ó¢)
- Ó¦Öú: 2 (Ó×¶ùÔ°)
- ½ð±Ò: 22566
- ºì»¨: 33
- ɳ·¢: 1
- Ìû×Ó: 10544
- ÔÚÏß: 406.2Сʱ
- ³æºÅ: 253387
- ×¢²á: 2006-05-21
- רҵ: ¸ß·Ö×Ӻϳɻ¯Ñ§
4Â¥2010-05-29 19:52:57
wpz.219
Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 4 (Ó×¶ùÔ°)
- ½ð±Ò: 8330.3
- É¢½ð: 732
- ºì»¨: 2
- Ìû×Ó: 2128
- ÔÚÏß: 289Сʱ
- ³æºÅ: 622123
- ×¢²á: 2008-10-10
- ÐÔ±ð: GG
- רҵ: Õ³ºÏ¼Á
5Â¥2010-05-29 21:23:01
СÂìÒÏ1980
ľ³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 1 (Ó×¶ùÔ°)
- ½ð±Ò: 5099.6
- É¢½ð: 2001
- ºì»¨: 2
- Ìû×Ó: 1610
- ÔÚÏß: 176.7Сʱ
- ³æºÅ: 158156
- ×¢²á: 2006-01-06
- ÐÔ±ð: GG
- רҵ: ÀíÂۺͼÆË㻯ѧ
6Â¥2010-05-29 21:50:17
placopolymer
½ð³æ (Ö°Òµ×÷¼Ò)
á·î¸ÉúÎï¾ÛÈéËá¼°¹²¾ÛÎïÑо¿
- PEPI: 1
- Ó¦Öú: 329 (´óѧÉú)
- ½ð±Ò: 2934
- É¢½ð: 725
- ºì»¨: 28
- Ìû×Ó: 4715
- ÔÚÏß: 389Сʱ
- ³æºÅ: 431867
- ×¢²á: 2007-08-12
- רҵ: ÉúÎïÒ½Óø߷Ö×Ó²ÄÁÏ
7Â¥2010-05-29 22:58:50
junergao
½ð³æ (СÓÐÃûÆø)
ÓÞÈË
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 756.4
- ºì»¨: 2
- Ìû×Ó: 275
- ÔÚÏß: 46.5Сʱ
- ³æºÅ: 439276
- ×¢²á: 2007-10-10
- רҵ: Ó¦Óø߷Ö×Ó»¯Ñ§ÓëÎïÀí

8Â¥2010-05-29 23:04:53
СÀסª¡ª
ͳæ (³õÈëÎÄ̳)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 104.5
- Ìû×Ó: 18
- ÔÚÏß: 15.9Сʱ
- ³æºÅ: 1967616
- ×¢²á: 2012-09-01
- רҵ: ¸ß·Ö×Ó²ÄÁϵļӹ¤Óë³ÉÐÍ
¡ï
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
| Polydispersed index£¨PDI£©¶à·ÖÉ¢Ö¸Êý£¬PDI£½Êý¾ùÁ£¾¶/ÖØ¾ùÁ£¾¶£¬µ±È»ÊÇÔ½½Ó½ü1Ô½ºÃ£¬¾ùÒ»ÐԺà |
9Â¥2021-10-19 08:12:29













»Ø¸´´ËÂ¥
20