Carboxymethylated sago starch nanoparticles: influence of reaction parameters on degree of substitution
Carboxymethyl sago starch (CMSS) was synthesized in aqueous medium under various reaction conditions. The influence of sodium hydroxide (NaOH), mole ratio of sodium monochloroacetate (NaMCA) to starch, reaction temperature and reaction duration were evaluated for degree of substitution by direct...
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| Format: | Final Year Project Report / IMRAD |
| Language: | English |
| Published: |
Universiti Malaysia Sarawak, (UNIMAS)
2015
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/10812/ http://ir.unimas.my/id/eprint/10812/8/Sit%20Johnson%20%28fulltext%29.pdf |
| _version_ | 1848836866364669952 |
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| author | Sit, Johnson |
| author_facet | Sit, Johnson |
| author_sort | Sit, Johnson |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | Carboxymethyl sago starch (CMSS) was synthesized in aqueous medium under various reaction
conditions. The influence of sodium hydroxide (NaOH), mole ratio of sodium monochloroacetate
(NaMCA) to starch, reaction temperature and reaction duration were evaluated for degree of
substitution by direct titration. The ideal optimum conditions based on the investigation is 20 %
NaOH; mole ratio of NaMCA/Starch is 1.4; 60 °C for dissolution and etherification temperature
respectively; 3 hrs for dissolution and etherification duration, respectively. Carboxymethyl sago
starch nanoparticles with degree of substitution (DS) of 1.33 was synthesized via simple
nanoprecipitation and characterized by Fourier transform infrared (FTIR) and scanning electron
microscope (SEM). |
| first_indexed | 2025-11-15T06:30:34Z |
| format | Final Year Project Report / IMRAD |
| id | unimas-10812 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:30:34Z |
| publishDate | 2015 |
| publisher | Universiti Malaysia Sarawak, (UNIMAS) |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-108122024-01-29T03:29:14Z http://ir.unimas.my/id/eprint/10812/ Carboxymethylated sago starch nanoparticles: influence of reaction parameters on degree of substitution Sit, Johnson S Agriculture (General) SB Plant culture Carboxymethyl sago starch (CMSS) was synthesized in aqueous medium under various reaction conditions. The influence of sodium hydroxide (NaOH), mole ratio of sodium monochloroacetate (NaMCA) to starch, reaction temperature and reaction duration were evaluated for degree of substitution by direct titration. The ideal optimum conditions based on the investigation is 20 % NaOH; mole ratio of NaMCA/Starch is 1.4; 60 °C for dissolution and etherification temperature respectively; 3 hrs for dissolution and etherification duration, respectively. Carboxymethyl sago starch nanoparticles with degree of substitution (DS) of 1.33 was synthesized via simple nanoprecipitation and characterized by Fourier transform infrared (FTIR) and scanning electron microscope (SEM). Universiti Malaysia Sarawak, (UNIMAS) 2015 Final Year Project Report / IMRAD NonPeerReviewed text en http://ir.unimas.my/id/eprint/10812/8/Sit%20Johnson%20%28fulltext%29.pdf Sit, Johnson (2015) Carboxymethylated sago starch nanoparticles: influence of reaction parameters on degree of substitution. [Final Year Project Report / IMRAD] (Unpublished) |
| spellingShingle | S Agriculture (General) SB Plant culture Sit, Johnson Carboxymethylated sago starch nanoparticles: influence of reaction parameters on degree of substitution |
| title | Carboxymethylated sago starch nanoparticles: influence of reaction parameters on degree of substitution |
| title_full | Carboxymethylated sago starch nanoparticles: influence of reaction parameters on degree of substitution |
| title_fullStr | Carboxymethylated sago starch nanoparticles: influence of reaction parameters on degree of substitution |
| title_full_unstemmed | Carboxymethylated sago starch nanoparticles: influence of reaction parameters on degree of substitution |
| title_short | Carboxymethylated sago starch nanoparticles: influence of reaction parameters on degree of substitution |
| title_sort | carboxymethylated sago starch nanoparticles: influence of reaction parameters on degree of substitution |
| topic | S Agriculture (General) SB Plant culture |
| url | http://ir.unimas.my/id/eprint/10812/ http://ir.unimas.my/id/eprint/10812/8/Sit%20Johnson%20%28fulltext%29.pdf |