000			03683ntm a2200361 i 4500
999			_c96393 _d96399
003			MY-KuUP
005			20251125105951.0
006			t||||fr|||| 000 0
008			220315s2021 my a|||frm||| 000 0 eng d
020			_aTHE0009165(Local) _qhardback
040			_aUMP _beng _cUMP _erda
090			_aFSTI .E83 2021 r Thesis
100	1		_aEtdal Bakhiet, _eauthor.
245	1	0	_aBiomineralization of hydroxyethyl cellulose/sodium alginate impregnated with cellulose nanocrystals by using surface modification technique /
264		1	_aKuantan, Pahang : _bUMP, _c2021
264		4	_c© 2021
300			_axi, 64 pages : _billustrations ; _c30 cm. + _e1 CD-ROM
336			_atext _2rdacontent
336			_atext _2rdacontent
337			_aunmediated _2rdamedia
337			_acomputer _2rdamedia
338			_avolume _2rdacarrier
338			_acomputer disc _2rdacarrier
347			_atext file _bPDF _2rda
500			_aFaculty of Industrial Sciences and Technology
502			_aThesis (Master of Science ) -- Universiti Malaysia Pahang – 2021
504			_aIncludes bibliographical references
520	3		_aBone tissue engineering utilizes scaffolds fabricated from various biopolymeric materials to obtain a specific topography prior to seeding with specified cells and implantation into an injured body. The aim of this research is to synthesize biopolymeric materials from hydroxylethylcellulose (HEC) (5 wt%) blended with sodium alginate (SA)(10 wt%) at 1:1 ratio and incorporated with cellulose nanocrystals (CNC) (11 w/v%). The scaffolds was fabricated using the freeze-drying technique. For the mineralization process, these HEC/SA and HEC/SA/CNC scaffolds were treated with simulated body fluid (SBF) by immersion technique through the depositing of calcium phosphate on the scaffold’s surfaces. The behavior of scaffolds such as chemical structures and thermal properties were characterized by using FESEM, EDX, ATR-FTIR, and UTM. In-vitro biocompatibility of the scaffolds was investigated by culturing human fetal osteoblast (hFOB) cells on these scaffolds. The SEM images displayed interconnected porous structures with diameters ranging from 40 to 400 μm and porosity percentages ranging from 75 ± 5% to 90.5 ± 5 %. The high swelling ratio of HEC/SA untreated with SBF scaffold was ascribed to the strong hydrogen bonding and Van der Waals interactions between polymer chains. After 7 days of incubation, the scaffolds began to disintegrate, which leads to the increase in weight loss (simultaneously up to ~60%). ATR-FTIR results exhibit possible interactions between hydroxyl groups of HEC, SA and CNC in the blends suggests there is chemical interaction between scaffolds. The TGA results showed four different regions of mass losses, represents the degradation temperature and water disposal, side - chain bond breaking, pyrolysis of SA and dehydroxylation behavior of calcium phosphate, respectively. The cell-scaffolds interaction demonstrated that hFOB cells differentiated and spread well on the scaffolds with better cell proliferation and attachment on HEC/SA/CNC treated with SBF porous scaffolds. Since these biocompatible and biodegradable scaffolds showed promising results, these scaffolds could be adopted for the design of next-generation tissue-engineered bone grafts.
610	2	0	_aFaculty of Industrial Sciences and Technology _xDissertations
650		0	_aUniversities and colleges _xDissertations
650		0	_aTheses
942			_2lcc _cTHESIS