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Development of Nata de Coco-based transparent air masks
Rahmayanti H.D.a, Amalia N.a, Dewi Y.C.a, Sustini E.a, Abdullah M.a
a Department of Physics, Bandung Institute of Technology, Bandung, 40132, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2018 IOP Publishing Ltd.We report the development of transparent air masks using Nata de coco as basic material. Several methods have been explored to make the transparent air masks: direct drying under sunlight, blending, combined blending and wringing, and hot press. The transparencies of the air masks samples were 54.16%, 62.5% and 66.67%, for masks produced by direct sun drying, blending, and blending-wringing methods, respectively. Meanwhile, the masks produced with hot press process showed the highest transparency, i.e. 87%. The preparation of pore size in the sample was done by several variation methods, such as coconut grater method, sandpaper method, and naphthalene insertion. Based on SEM characterization, sample from naphthalene insertion method have higher porosity which is 72.762%. The permeability of the sample was also measured to clarify pressure drop. Sample mask with naphtalene insertion has the lowest pressure drop among other samples. This indicates that the mask with naphtalene insertion method has good possibility to be applied as transparent air masks.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Direct sun,Insertion methods,Nata de coco,Press process,Variation method[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Nata de coco,transparency,transparent air masks[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]The PMDSU (Program Magister Doktor Sarjana Unggul) research grant from the Ministry of Research and Higher Education Number 1371b/I1.C01.2/KU/2017, Republic of Indonesia for HDR is fully acknowledged. Thank to Dr Muhammad Miftahul Munir for helping in pressure drop tools characterization.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1088/2053-1591/aac406[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]