Raw EHL was obtained from Nanjing Chemical Reagent Co., Ltd. A 3% sodium hydroxide solution was obtained by mixing sodium hydroxide powder (Nanjing Chemical Reagent Co., Ltd) and distilled water according to the mass ratio, and a 2% dilute sulfuric acid solution (Nanjing Chemical Reagent Co., Ltd) was obtained by mixing 98% sulfuric acid (Nanjing Chemical Reagent Co., Ltd) and distilled water according to the volume ratio. All measurement instruments in this experiment were used at room temperature, with the temperature of the magnetic heated stirrer held at approximately 80 °C, and the temperature of the constant-temperature drying oven held at 60 °C to prevent the formation of mildew caused by the water content in the purified EHL; moreover, the temperature of the high-temperature box-type electric furnace was set to range from 190 to 270 °C.
Sulfuric acid
Manufactured by Nanjing Chemical Reagent
Sourced in China
Sulfuric acid is a colorless, dense, and highly corrosive liquid chemical compound. It has the chemical formula H2SO4 and is widely used in various industrial processes and laboratory applications.
Automatically generated - may contain errors
Lab products found in correlation
Sodium hydroxide (naoh), by Nanjing Chemical Reagent (2 mentions)
Tocopherol, by Merck Group (1 mentions)
Dialysis bag, by Yuanye Bio-Technology (1 mentions)
Anhydrous glucose, by Yuanye Bio-Technology (1 mentions)
P nitrophenyl α d glucopyranoside, by Merck Group (1 mentions)
Deae cellulose, by Yuanye Bio-Technology (1 mentions)
Ethanol, by Merck Group (1 mentions)
Methanol, by Nanjing Chemical Reagent (1 mentions)
Petroleum ether, by Nanjing Chemical Reagent (1 mentions)
Phosphate buffered saline (pbs), by Merck Group (1 mentions)
α glucosidase, by Merck Group (1 mentions)
Acarbose, by Merck Group (1 mentions)
Dimethyl sulfoxide (dmso), by Nanjing Chemical Reagent (1 mentions)
Sodium chloride (nacl), by Nanjing Chemical Reagent (1 mentions)
Polyvinyl alcohol (pva), by Merck Group (1 mentions)
Sodium tetraborate decahydrate, by Merck Group (1 mentions)
Methanol, by Sinopharm (1 mentions)
Glycerol, by Sinopharm (1 mentions)
Sodium hydroxide (naoh), by Sinopharm (1 mentions)
Hydrochloric acid (hcl), by Nanjing Chemical Reagent (1 mentions)
7 protocols using sulfuric acid
1
Purification and Characterization of Raw EHL
2
Analytical-grade reagents protocol
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Analytical-grade reagents were purchased for this study: p-nitrophenyl-α-d -glucopyranoside (PNPG), tocopherol, hydroxybiphenyl, α-glucosidase (14.5 U/mg), acarbose, PBS (Sigma, Shanghai, China), ethanol, petroleum ether, methanol, DMSO, methanol (HPLC grade), 98% sulfuric acid, anthrone, sodium chloride, phosphate buffer, sodium carbonate, and sodium hydroxide (Nanjing Chemical Reagent Co., Ltd., China). AB-8 macroporous adsorption resin was purchased from Bengbu Liaoyuan New Materials Co., Ltd. Anhydrous glucose, DEAE cellulose, and dialysis bags were purchased from Shanghai Yuanye Biotechnology Co., Ltd. Pectinase was purchased from Kandin Chemical Reagent Co., Ltd. (Guangzhou, China). DMEM was purchased from Thermo Fisher Scientific Instrument Co., Ltd. (Waltham, MA, USA).
3
Cellulose Graphene Composite Synthesis
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Sulfuric acid (98 wt%, Nanjing Chemical Reagent) was adjusted to 48 wt% concentration and cellulose powder was dried for 12 h at 50 °C before use. Sodium tetraborate decahydrate (borax, ≥99.5%) and polyvinyl alcohol (PVA, 99% hydrolyzed, Mw = 146,000~186,000 g mol−1) and were obtained from Sigma Chemical. Graphene (GN) was provided by Nanjing Kefu Nano-Tech Co. Ltd (Nanjing, China).
4
Cellulose-based Superhydrophobic Coating
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N-(2-aminoethyl)-3-amino-propylmethyldimethoxysilane (AEAPMDS, ≥ 99.7%) was supplied by Alfa Aesar (Heysham, UK). Microcrystalline cellulose (MCC, officinal class) was purchased from Shanghai Jinsui Bio-Technology Co., Ltd. (Shanghai, China). Decorative base paper (100 g/m2) and water-based acrylic resin (viscosity 37.6 mPa∙s; curing time of 2 min; concentration of the water-based acrylic resin is 59.57%) were supplied by Nanjing Bluewind New Material Science and Technology Co., Ltd. (Nanjing, China). Sulfuric acid (98%) and tert-butyl alcohol (99.7%) were purchased from Nanjing Chemical Reagent Co., Ltd. (Nanjing, China). All chemicals were of analytical grade and used without further purification. Distilled water was used in all of the experiments and was self-made.
5
Extraction and Purification of Chemicals
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HPLC-grade methanol was purchased from Yuwang Group (Shandong, China); ultrapure water was prepared by Milli-Qsystem (Milford, MA, USA); other chemicals and solvents were analytical grade. Sulfuric acid was bought from Nanjing Chemical Reagent Co., Ltd. (Jiangsu, China); sodium hydroxide was bought from Xilong Reagent Co., Ltd. (Guangdong, China); diethyl ether was bought from Nanjing Chemical Reagent Co., Ltd. (Jiangsu, China).
6
Preparation and Characterization of Corn Starch-based Lignocellulosic Composite
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Corn starch (CS) was supplied by the Shandong Hengren Industry and Trade Company (Tengzhou, Shandong, China). The LC was homemade and based on bleached softwood pulpboard (a commercial product) made from oak bark. The glycerol, glycol, methanol, and sodium hydroxide were from Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China). The sodium periodate was from Shantou Xilong Chemical Plant Co., Ltd. (Shantou, Guangdong, China). The chloride hydroxylamine was purchased from Shanghai No. 4 Reagent & H. V. Chemical Co., Ltd. (Shanghai, China). The sulfuric acid was from Nanjing Chemical Reagent Factory (Nanjing, Jiangsu, China). All chemicals were of analytical grade or similar.
7
Extraction and Purification of Leonurus Artemisia
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Leonurus artemisia samples were obtained from Jiangxi Xinzheng Pharmaceutical Co., Ltd., Pingxiang, China. The sephacryl S-200 and diethylaminoethylcellulose-52 (DEAE-52) were obtained from Whatman International, Ltd. (Kent, UK). Ethanol, sulfuric acid, hydrochloric acid, phenol, ethyl ether and other reagents were purchased from the Nanjing Chemical Reagent Co., Ltd. (Nanjing, China). All of the chemicals reagents and chemicals were of analytical grade.
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Leonurus artemisia samples were obtained from Jiangxi Xinzheng Pharmaceutical Co., Ltd., Pingxiang, China. The sephacryl S-200 and diethylaminoethylcellulose-52 (DEAE-52) were obtained from Whatman International, Ltd. (Kent, UK). Ethanol, sulfuric acid, hydrochloric acid, phenol, ethyl ether and other reagents were purchased from the Nanjing Chemical Reagent Co., Ltd. (Nanjing, China). All of the chemicals reagents and chemicals were of analytical grade.
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