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Outline
A method of continuous flash pretreatment combined with oxidative amination grafting is proposed to prepare the cross-linked biobased material which can be hot processed. The effects of thermoforming processing methods， decrosslinking recovery and reprocessing on the properties of the materials are investigated. The results show that when the mass ratio of sodium periodate to plant fiber is 0.3 and the molar ratio of amine to aldehyde is 1.4， the sheet exhibits excellent mechanical properties and good hydrophobicity. The expansion rates of bending strength and water absorption are 58.2 MPa and 15.7%， respectively， and the tensile strength is increased to 69.9 MPa after dynamic molding. The water absorption expansion rate is reduced to 11.2%. The results show that the strength of 3 h， 80 ℃ hydrolyzed products can reach 55.1 MPa and the properties can be maintained to 78.9% after crushing， hydrolyzing， and reforming the dynamic moulded sheets. The results prove the feasibility of oxide-amination modification method and dynamic die molding to prepare high performance plant fiber materials， which is helpful to realize the recycling of plant fiber and the development of environmentally friendly biomass materials.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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