Synthesis, characterization and properties of pineapple peel cellulose-g-acrylic acid hydrogel loaded with kaolin and sepia ink
- 569 Downloads
Novel composite hydrogels were synthesized by grafting of acrylic acid onto pineapple peel cellulose and addition of kaolin or sepia ink in ionic liquid 1-butyl-3-methylimidazolium chloride, using potassium persulfate as a free radical initiator and N,N′-methylenebisacrylamide as a crosslinking agent. The structure and morphology of the prepared hydrogels were characterized by Fourier transform infrared spectroscopy, field emission scanning electron microscope, X-ray diffraction, thermogravimetry and differential scanning calorimetry. Kaolin and sepia ink improved the thermal stability of the hydrogels. Swelling studies on the prepared hydrogels indicated sepia ink and kaolin affected the swelling ratio and pH-responsive properties. The optimum swelling pH value for the hydrogels was shifted from 7.0 to 12.0 in the presence of sepia ink. The effects of kaolin and sepia ink contents on methylene blue adsorption capacity of the prepared hydrogels were also investigated. The optimum methylene blue adsorption capacity reached 153.85 mg/g at 10% of kaolin and 142.21 mg/g at 20% of sepia ink. The pseudo-second-order kinetic model fit well with the experimental results, indicating the adsorption was chemisorption behavior.
KeywordsPineapple peel cellulose Hydrogel Acrylic acid Kaolin Sepia ink Methylene blue
This work was supported by the National Natural Science Foundation of China under Grant Nos. 31471673 and 31271978 and the Ministry of Education PRC under Grant No. 20120172110017.
- Rashidzadeh A, Olad A, Salari D, Reyhanitabar A (2014) On the preparation and swelling properties of hydrogel nanocomposite based on sodium alginate-g-poly(acrylic acid-co-acrylamide)/clinoptilolite and its application as slow release fertilizer. J Polym Res 21:1–15. doi: 10.1007/s10965-013-0344-9 CrossRefGoogle Scholar
- Salisu A, Sanagi MM, Karim KJA, Pourmand N, Ibrahim WAW (2015) Adsorption of methylene blue on alginate-grafted-poly(methyl methacrylate). Jurnal Teknologi 76:19–25Google Scholar
- Shirsath SR, Patil AP, Patil R, Naik JB, Gogate PR, Sonawane SH (2013) Removal of brilliant green from wastewater using conventional and ultrasonically prepared poly(acrylic acid) hydrogel loaded with kaolin clay: a comparative study. Ultrason Sonochem 20:914–923. doi: 10.1016/j.ultsonch.2012.11.010 CrossRefGoogle Scholar
- Yusup EM, Mahzan S, Jafferi N, Been CW (2015) The effectiveness of TBAF/DMSO in dissolving oil palm empty fruit bunch-cellulose phosphate. J Med Bioeng 4:165–169Google Scholar