Herein, the microcrystalline cellulose (MCC) was obtained from jut fiber by ammonium persulfate (... more Herein, the microcrystalline cellulose (MCC) was obtained from jut fiber by ammonium persulfate (APS) oxidation process and thus polyvinyl alcohol (PVA) composite films were prepared by the reinforcement of MCC in a solution casting method. The surface chemistry, thermal properties and surface morphology of MCC and PVA-MCC composite films were studied by FT-IR spectroscopy, thermogravimetric analyzer and scanning electron microscopy. The SEM images confirmed the rod like MCC with average particle diameter 4.6 µm and length in 48.4 µm. The FT-IR spectroscopy revealed the complete removal of lignin and hemicellulose from jute fiber. A peak at 1730 cm− 1 was introduced in MCC due to oxidation with APS. The absorption peak of –OH groups in PVA-MCC composite films were shifted, somewhat disappeared and weakened due to the intra and inter molecular hydrogen bonding of MCC and OH groups in PVA. Thermogravimetric analysis expressed the thermal behavior of MCC and PVA-MCC composite films. In...
International Journal Of Community Medicine And Public Health
The coronavirus disease 2019 (COVID-19) is a disease caused by the outbreak of a new virus, known... more The coronavirus disease 2019 (COVID-19) is a disease caused by the outbreak of a new virus, known as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). On 11 March 2020, the World Health Organization (WHO) declared the COVID-19 as a global pandemic.1 The first confirmed cases were recorded in Bangladesh on 08 March 2020 and continued to spread.2 Since then, the new realities of work from home, temporary unemployment, home-schooling of children, and lack of physical contact with other family members, friends, and colleagues are taking time to habitual with it. The aftermath of such an outbreak is not only harming physical health but also mental health.3 Therefore it is necessary to identify mental health contexts of COVID-19 and effective therapies to tackle the situations.4 The COVID‐19 pandemic has made a significant change in the healthcare delivery system worldwide, physicians are offering digital health solutions at record, and putting the telemedicine services (i.e. ...
Herein, the microcrystalline cellulose (MCC) was obtained from jut fiber by ammonium persulfate (... more Herein, the microcrystalline cellulose (MCC) was obtained from jut fiber by ammonium persulfate (APS) oxidation process and thus polyvinyl alcohol (PVA) composite films were prepared by the reinforcement of MCC in a solution casting method. The surface chemistry, thermal properties and surface morphology of MCC and PVA-MCC composite films were studied by FT-IR spectroscopy, thermogravimetric analyzer and scanning electron microscopy. The SEM images confirmed the rod like MCC with average particle diameter 4.6 µm and length in 48.4 µm. The FT-IR spectroscopy revealed the complete removal of lignin and hemicellulose from jute fiber. A peak at 1730 cm− 1 was introduced in MCC due to oxidation with APS. The absorption peak of –OH groups in PVA-MCC composite films were shifted, somewhat disappeared and weakened due to the intra and inter molecular hydrogen bonding of MCC and OH groups in PVA. Thermogravimetric analysis expressed the thermal behavior of MCC and PVA-MCC composite films. In...
International Journal Of Community Medicine And Public Health
The coronavirus disease 2019 (COVID-19) is a disease caused by the outbreak of a new virus, known... more The coronavirus disease 2019 (COVID-19) is a disease caused by the outbreak of a new virus, known as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). On 11 March 2020, the World Health Organization (WHO) declared the COVID-19 as a global pandemic.1 The first confirmed cases were recorded in Bangladesh on 08 March 2020 and continued to spread.2 Since then, the new realities of work from home, temporary unemployment, home-schooling of children, and lack of physical contact with other family members, friends, and colleagues are taking time to habitual with it. The aftermath of such an outbreak is not only harming physical health but also mental health.3 Therefore it is necessary to identify mental health contexts of COVID-19 and effective therapies to tackle the situations.4 The COVID‐19 pandemic has made a significant change in the healthcare delivery system worldwide, physicians are offering digital health solutions at record, and putting the telemedicine services (i.e. ...
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