Closed cell chitin foam is provided. The closed-cell chitin foam composition does not absorb water, is biodegradable, and is mechanically characterized by a density range of 16 to 800 kg/m3, closed-cell pore sizes ranging from 50 microns to 1 mm, an elastic modulus of 3 to 175 MPa, and a tensile strength of 0.15 to 6.5 MPa. The chitin is at least 70% acetylated. In one aspect, the foam is enclosed in a shell e.g. in the form of a surfboard. Chitin foam according to this invention is fully biodegradable. The chitin foam overcomes the current problems with foams that contain polyurethane and polystyrene, and which are manufactured from petroleum-based sources. Petroleum based foams are not renewable, have an adverse impact on our environment, and pose significant health hazards to those who manufacture them. The chitin foam with its water-based manufacturing process and naturally sourced chitin, solves these problems.
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机译：提供闭孔甲壳质泡沫。闭孔几丁质泡沫组合物不吸水，可生物降解，并且在机械上具有16至800 kg / m3的密度范围，50微米至1 mm的闭孔孔径，3至5的弹性模量的机械特征。强度为175 MPa，抗拉强度为0.15至6.5 MPa。甲壳质被至少70％乙酰化。一方面，泡沫被包封在壳中，例如，泡沫。以冲浪板的形式。根据本发明的几丁质泡沫是完全可生物降解的。几丁质泡沫克服了目前包含石油和石油的聚氨酯和聚苯乙烯泡沫的问题。石油基泡沫不可再生，会对我们的环境造成不利影响，并对制造泡沫的人造成重大健康危害。几丁质泡沫及其水基制造工艺和天然来源的几丁质解决了这些问题。
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