Surface chemical compositions and dispersity of starch nanocrystals formed by sulfuric and hydrochloric acid hydrolysis.
Surface chemical compositions of starch nanocrystals (SNC) prepared using sulfuric acid (H2SO4) and hydrochloric acid (HCl) hydrolysis were analyzed by X-ray photoelectron spectroscopy (XPS) and FT-IR. The results showed that carboxyl groups and sulfate esters were presented in SNC after hydrolysis...
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Public Library of Science (PLoS)
2014-01-01
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| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0086024&type=printable |
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| author | Benxi Wei Xueming Xu Zhengyu Jin Yaoqi Tian |
| author_facet | Benxi Wei Xueming Xu Zhengyu Jin Yaoqi Tian |
| author_sort | Benxi Wei |
| collection | DOAJ |
| description | Surface chemical compositions of starch nanocrystals (SNC) prepared using sulfuric acid (H2SO4) and hydrochloric acid (HCl) hydrolysis were analyzed by X-ray photoelectron spectroscopy (XPS) and FT-IR. The results showed that carboxyl groups and sulfate esters were presented in SNC after hydrolysis with H2SO4, while no sulfate esters were detected in SNC during HCl-hydrolysis. TEM results showed that, compared to H2SO4-hydrolyzed sample, a wider size distribution of SNC prepared by HCl-hydrolysis were observed. Zeta-potentials were -23.1 and -5.02 mV for H2SO4- and HCl-hydrolyzed SNC suspensions at pH 6.5, respectively. Nevertheless, the zeta-potential values decreased to -32.3 and -10.2 mV as the dispersion pH was adjusted to 10.6. After placed 48 h at pH 10.6, zeta-potential increased to -24.1 mV for H2SO4-hydrolyzed SNC, while no change was detected for HCl-hydrolyzed one. The higher zeta-potential and relative small particle distribution of SNC caused more stable suspensions compared to HCl-hydrolyzed sample. |
| format | Article |
| id | doaj-art-0eeeb0c9ddac4ff88bb05da841483712 |
| institution | OA Journals |
| issn | 1932-6203 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-0eeeb0c9ddac4ff88bb05da8414837122025-08-20T02:15:19ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-0192e8602410.1371/journal.pone.0086024Surface chemical compositions and dispersity of starch nanocrystals formed by sulfuric and hydrochloric acid hydrolysis.Benxi WeiXueming XuZhengyu JinYaoqi TianSurface chemical compositions of starch nanocrystals (SNC) prepared using sulfuric acid (H2SO4) and hydrochloric acid (HCl) hydrolysis were analyzed by X-ray photoelectron spectroscopy (XPS) and FT-IR. The results showed that carboxyl groups and sulfate esters were presented in SNC after hydrolysis with H2SO4, while no sulfate esters were detected in SNC during HCl-hydrolysis. TEM results showed that, compared to H2SO4-hydrolyzed sample, a wider size distribution of SNC prepared by HCl-hydrolysis were observed. Zeta-potentials were -23.1 and -5.02 mV for H2SO4- and HCl-hydrolyzed SNC suspensions at pH 6.5, respectively. Nevertheless, the zeta-potential values decreased to -32.3 and -10.2 mV as the dispersion pH was adjusted to 10.6. After placed 48 h at pH 10.6, zeta-potential increased to -24.1 mV for H2SO4-hydrolyzed SNC, while no change was detected for HCl-hydrolyzed one. The higher zeta-potential and relative small particle distribution of SNC caused more stable suspensions compared to HCl-hydrolyzed sample.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0086024&type=printable |
| spellingShingle | Benxi Wei Xueming Xu Zhengyu Jin Yaoqi Tian Surface chemical compositions and dispersity of starch nanocrystals formed by sulfuric and hydrochloric acid hydrolysis. PLoS ONE |
| title | Surface chemical compositions and dispersity of starch nanocrystals formed by sulfuric and hydrochloric acid hydrolysis. |
| title_full | Surface chemical compositions and dispersity of starch nanocrystals formed by sulfuric and hydrochloric acid hydrolysis. |
| title_fullStr | Surface chemical compositions and dispersity of starch nanocrystals formed by sulfuric and hydrochloric acid hydrolysis. |
| title_full_unstemmed | Surface chemical compositions and dispersity of starch nanocrystals formed by sulfuric and hydrochloric acid hydrolysis. |
| title_short | Surface chemical compositions and dispersity of starch nanocrystals formed by sulfuric and hydrochloric acid hydrolysis. |
| title_sort | surface chemical compositions and dispersity of starch nanocrystals formed by sulfuric and hydrochloric acid hydrolysis |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0086024&type=printable |
| work_keys_str_mv | AT benxiwei surfacechemicalcompositionsanddispersityofstarchnanocrystalsformedbysulfuricandhydrochloricacidhydrolysis AT xuemingxu surfacechemicalcompositionsanddispersityofstarchnanocrystalsformedbysulfuricandhydrochloricacidhydrolysis AT zhengyujin surfacechemicalcompositionsanddispersityofstarchnanocrystalsformedbysulfuricandhydrochloricacidhydrolysis AT yaoqitian surfacechemicalcompositionsanddispersityofstarchnanocrystalsformedbysulfuricandhydrochloricacidhydrolysis |