Surface modification of cellulose isolated from Sesamun indicum underutilized seed: A means of enhancing cellulose hydrophobicity

被引:21
作者
Adewuyi, Adewale [1 ,2 ]
Pereira, Fabiano Vargas [2 ]
机构
[1] Redeemers Univ, Fac Nat Sci, Dept Chem Sci, Ede, Osun State, Nigeria
[2] Univ Fed Minas Gerais, Dept Chem, Av Antonio Carlos 6627, BR-31270901 Belo Horizonte, MG, Brazil
来源
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES | 2017年 / 2卷 / 03期
关键词
Cellulose; Hydrophobicity; Modification; Sesamum indicum; Underutilized seed; PHYSICOCHEMICAL PROPERTIES; HEAVY-METALS; DIETARY FIBER; REMOVAL; NANOCRYSTALS; BIOSORPTION; BIOSORBENT; CAPACITY; COPPER; IMPACT;
D O I
10.1016/j.jsamd.2017.07.007
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Cellulose (SC) isolated from sesame seed (SS) was surface modified with the introduction of an ester functional group via a simple reaction to produce the modified product (SA). SS, SC and SA were characterized using Fourier transform infrared (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TG), particle size distribution (PSD), zeta potential and scanning electron microscopy (SEM). SC and SA were evaluated for their water holding capacity (WC), oil holding capacity (OC), swelling capacity (SW) and their ability to adsorb heavy metals. The FTIR revealed peaks corresponding to the formation of the ester functional group at the surface of SA. The crystallinity of SC was 28.02% but after the modification, it increased to 77.03% in SA. The PSD of SC and SA was both monomodal with sizes of 10.1305 mm in SC and 10.2511 mm in SA. The adsorption capacity of SC towards Pb (II) and Cu (II) ions was higher than that of SA. However, SA was unable to adsorb Cu (II) ions. SA exhibited the lower WC and SW values as compared to SC which suggested an improved hydrophobicity after the modification. This study has shown that hydrophobicity can be improved in cellulose via surface modification. (c) 2017 The Authors. Publishing services by Elsevier B.V. on behalf of Vietnam National University, Hanoi. This is an open access article under the CC BY license.
引用
收藏
页码:326 / 332
页数:7
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