Microbial-induced CaCO3 filled seaweed-based film for green plasticulture application

JOURNAL OF CLEANER PRODUCTION

卷:199

Article

Khalil, H. P. S. Abdul¹  Chong, E. W. N.¹  Owolabi, F. A. T.^1,4  Asniza, M.¹  Tye, V. Y.¹  Tajarudin, H. A.¹  Paridah, M. T.²  Rizal, S.³ 

[1] Univ Sains Malaysia, Sch Ind Technol, George Town 11800, Malaysia

[2] Univ Putra Malaysia, Inst Trop Forestry & Forest Prod INTROP, Serdang 43400, Selangor, Malaysia

[3] Syiah Kuala Univ, Mech Engn Dept, Darussalam 23111, Banda Aceh, Indonesia

[4] Fed Inst Ind Res Oshodi, Pulp & Paper Div, Lagos, Nigeria

关键词: Bacillus sphaericus;    Biodegradable polymers;    Biopolymers;    Calcium carbonate;    Red seaweed;   

DOI  :  10.1016/j.jclepro.2018.07.111

来源: Elsevier

【 摘 要 】

This work aimed to develop green biodegradable film using red seaweed (Kappaphycus alvarezii) as a base matrix and calcium carbonate (CaCO3) as a filler to enhance the properties of the red seaweed material for plasticulture purpose. CaCO3 which was produced by microbially induced precipitation (MB-CaCO3) using Bacillus sphaericus, was characterized and compared with the commercial CaCO3 (C CaCO3). FESEM image revealed that the size of MB-CaCO3 was smaller and more uniform compared to C-CaCO3. FTIR and XRD analyses confirmed the existence of crystalline polymorph of calcite in MB-CaCO3, which contained a higher percentage of calcite than C-CaCO3. However, the crystallinity and thermal stability of MB-CaCO3 was lower than C-CaCO3. From the results of physical, mechanical and thermal properties of composite films filled with C-CaCO3 and MB-CaCO3 fillers, the optimum loading of C-CaCO3 and MB-CaCO3 was found at 0.1% and 0.15%, respectively. Composite films filled with MB-CaCO3 promote brighter film, better water barrier, hydrophobicity and biodegradability compared to C-CaCO3. Since the effect of MB-CaCO3 on film functional properties was comparable to C-CaCO3, it can be used as an alternative to C-CaCO3 as inorganic filler for composite films in agriculture applications. (C) 2018 Elsevier Ltd. All rights reserved.

【 授权许可】

Free