scholarly journals Full Factorial Design Analysis and Characterization of Polyethylene, Starch and Aloe Vera Gel Thin Film Formulation

Author(s):  
Siti Fatma Abd Karim ◽  
Junaidah Jai ◽  
Ku Halim Ku Hamid ◽  
Mohd Hariz Mior Muzamin ◽  
Nadia Kamarrudin ◽  
...  
2000 ◽  
Vol 46 (11) ◽  
pp. 1042-1045 ◽  
Author(s):  
V S Andrade ◽  
B B Neto ◽  
W Souza ◽  
G M Campos-Takaki

Chitin production by Cunninghamella elegans (IFM 46109) was studied with a two-level full factorial design, varying time of cultivation and the concentration of D-glucose, L-asparagine, and thiamine in the culture medium. The material extracted was characterized by infrared and NMR spectroscopy. The highest chitin yield, 28.8%, was comparable with the highest in the literature and was obtained with a medium containing 60 g·L-1 of glucose, 3 g·L-1 of asparagine, and 0.008 mg·L-1 of thiamine. Increasing the time of cultivation from 24 h to 72 h did not affect chitin production. The three factors showed significant positive effects on chitin production, without interactions between them.Key words: chitin, chitosan, zygomycetes, Cunninghamella elegans.


2018 ◽  
Vol 18 (6) ◽  
pp. 4409-4412 ◽  
Author(s):  
Morgana de Medeiros Machado ◽  
Bruna Martinello Savi ◽  
Mariana Borges Perucchi ◽  
Alessandro Benedetti ◽  
Luis Felipe Silva Oliveira ◽  
...  

2012 ◽  
Vol 15 (4) ◽  
pp. 573-580 ◽  
Author(s):  
Fábio de Paiva Cota ◽  
Túlio Hallak Panzera ◽  
Marco Antônio Schiavon ◽  
André Luís Christoforo ◽  
Paulo Henrique Ribeiro Borges ◽  
...  

2015 ◽  
Vol 786 ◽  
pp. 58-62
Author(s):  
Tiam Ting Tee ◽  
Soo Tueen Bee ◽  
Azman Hassan ◽  
Chantara Thevy Ratnam ◽  
Tin Sin Lee ◽  
...  

This study aims to investigate the effect of three factors, namely alumina trihydrate (ATH), montmorillonite (MMT) and irradiation dosage on the mechanical properties (tensile strength and elongation at break) of flame-retarded LDPE-EVA composites. In this study, full factorial design analysis was used to examine the effects of factors and their combination interactions on mechanical properties. ATH is the most significant factor in affecting the tensile strength of LDPE-EVA blends due to the poor compatibility effect between ATH particles and LDPE-EVA matrix. However, MMT is the least significant factor on tensile strength of LDPE-EVA composites. ATH was the most significant in affecting the elongation at break of LDPE-EVA blends. This is because the increasing of ATH amount in LDPE-EVA matrix could restrict the mobolity of polymer chains in LDPE-EVA matrix. However, the factor of irradiation dosage was found to be insignificant in affecting the elongation at break of LDPE-EVA blends.


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