Viscosity–Molecular Weight Relations for Cellulose Acetate Butyrate.

1945 ◽  
Vol 37 (6) ◽  
pp. 573-577 ◽  
Author(s):  
J. W. Tamblyn ◽  
D. R. Morey ◽  
R. H. Wagner
Keyword(s):  
Molecular Weight ◽  
Cellulose Acetate ◽  
Cellulose Acetate Butyrate ◽  
Acetate Butyrate

scholarly journals Solid-Phase Synthesis of Cellulose Acetate Butyrate as Microsphere Wall Materials for Sustained Release of Emamectin Benzoate

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1381 ◽  
Author(s):  
Aimin Huang ◽  
Xuanhai Li ◽  
Xingtang Liang ◽  
Yanjuan Zhang ◽  
Huayu Hu ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Cellulose Acetate ◽  
Solid Phase ◽  
Drug Loading ◽  
Cellulose Acetate Butyrate ◽  
Cellulose Ester ◽  
Emamectin Benzoate ◽  
Water Solvent ◽  
Wall Materials ◽  
Acetate Butyrate

Emamectin benzoate (EB), a widely used pesticide, is prone to decomposition by ultraviolet light and suffers from the corresponding loss of efficacy. The timed release of EB based on microspheres is one of the effective methods to solve this issue. As a non-toxic cellulose ester, cellulose acetate butyrate (CAB) is regarded as one of the best wall-forming materials for microcapsules with a good controlled release performance. Herein, two methods—mechanical activation (MA) technology and a conventional liquid phase (LP) method—were employed to synthesize different CABs, namely CAB-MA and CAB-LP, respectively. The molecular structure, rheological property, and thermal stability of these CABs were investigated. The two CABs were used to prepare microspheres for the loading and release of EB via an o/w (oil-in-water) solvent evaporation method. Moreover, the performances such as drug loading, drug entrapment, and anti-photolysis of the drug for these microspheres were studied. The results showed that both CABs were available as wall materials for loading and releasing EB. Compared with CAB-LP, CAB-MA presented a lower molecular weight and a narrower molecular weight distribution. Moreover, the MA method endowed the CAB with more ester substituent groups and less crystalline structure in comparison to the LP method, which had benefits including pelletizing and drug loading.

Dielectric properties of amorphous cellulose acetate-butyrate polymer films

1993 ◽  
Vol 32 (4) ◽  
pp. 381-384 ◽  
Author(s):  
N. Venugopal Reddy ◽  
C. Ramesh Kumar ◽  
V. V. R. Narasimha Rao
Keyword(s):  
Dielectric Properties ◽  
Cellulose Acetate ◽  
Polymer Films ◽  
Cellulose Acetate Butyrate ◽  
Amorphous Cellulose ◽  
Acetate Butyrate
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