Focus on Cellulose ethers

Koodu iyasọtọ Cellulose ether ati awọn ibeere imọ-ẹrọ

Cellulose jẹ awọn orisun isọdọtun Organic lọpọlọpọ julọ ni agbaye. O wa lati ori ilẹ alawọ ewe ati awọn ohun ọgbin inu omi ati pe o jẹ paati akọkọ ti awọn odi sẹẹli okun ọgbin. Ayafi fun iye diẹ ti kokoro arun eranko ati awọn ohun alumọni okun, cellulose wa ni pato ninu awọn eweko alawọ ewe. Nipasẹ photosynthesis, awọn ohun ọgbin le ṣepọ 155Gt cellulose fun ọdun kan, eyiti 150Mt wa lati awọn eweko ti o ga julọ; cellulose ti ko nira igi jẹ nipa 10Mt; owu cellulose 12Mt; kemikali (ite ) 7Mt ti cellulose, nigba ti o tobi iye ti igi (nipa 500Mt ti cellulose) ti wa ni ṣi lo bi idana tabi asọ.
Cellulose adayeba yatọ ni mimọ. Owu jẹ okun ọgbin pẹlu akoonu cellulose ti o ga julọ ni iseda, ati akoonu cellulose rẹ nigbagbogbo ju 95%. Awọn opo gigun ti owu ni a lo ni aṣa ni iṣelọpọ awọn aṣọ. Okun kukuru ni a pe ni Linter pulp, eyiti o jẹ ohun elo aise pataki fun iṣelọpọ ile-iṣẹ ti awọn itọsẹ cellulose.

Ẹgbẹ akoonu

jeli otutu°C

koodu orukọ

Methoxy akoonu

%

Hydroxypropoxy akoonu

%

28.0-30. 0

7.5-12.0

58. 0-64. 0

E

27.0-30. 0

4. 0-7.5

62.0-68. 0

F

16.5 “20.0

23.0-32.0

68.0 “75. 0

J

19.0-24. 0

4. 0-12. 0

70.0-90. 0

K

 

ise agbese

ogbon ibeere

MC

HPMC

HEMC

HEC

E

F

J

K

Ode

Funfun tabi ina ofeefee lulú, ko si awọn patikulu isokuso ti o han gbangba ati awọn aimọ

Didara/% W

8.0

Pipadanu lori gbigbe /% W

6.0

Eérú Sulfated/% W

2.5

10.0

iki mPa • s

Samisi iye viscosity (-10%, +20%)

iye pH

5.0-9. 0

Gbigbe /%,

80

jeli otutu / ° c

50.0 ~ 55. 0

58.0 〜64. 0

62.0-68. 0

68.0 si 75. 0

70.0-90. 0

N75.0

 
Awọn iye viscosity waye fun awọn viscosities ni sakani10000 mPa・s〜1000000 mPa – sbetween cellulose ethers

 

ise agbese

ogbon ibeere

MC HPMC HEMC

HEC

Idaduro omi/%

90.0

iye isokuso / nmiW

0.5

ik coagulation akoko iyato / minW

360

 

Ipin Agbara Iṣeduro Fifẹ/% N

100

 


Akoko ifiweranṣẹ: Oṣu Kẹta-14-2023
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