Bamboo is an important part of forest resources. There are about 1,200 varieties of bamboo in the world, widely distributed in Asia, Africa, and South America while China is the world’s leading bamboo producing country in terms of bamboo varieties and areas of bamboo forests. Herein, Sichuan produces the most bamboos in China due to its suitable climate. Bamboo is also the plant with the fastest speed of growth in the world: in some areas, the hollow bamboo stalk can even grow 40 cm one day and the fully grown bamboo can reach 35-40 meters high with its compressive strength comparable to that of wood and tensile strength no inferior to that of steel. As bamboos grow fast and bamboo fiber can be naturally resolved in soil without causing pollution, a lot of paper has been made of bamboo in recent years for the sake of protecting the environment.
Sugarcane, an annual herb, is also one of the main raw materials for sugar. More than one hundred countries in the world plan sugarcane. Herein, China, Brazil and India are the largest sugarcane producers. Bagasse, remains of squeezing sugar out of sugarcane, is one of agricultural wastes that can be used to generate electricity as biofuels. Also, bagasse has become the raw materials to produce environmentally friendly paper due to its excellent water retention capacity and fiber morphology comparable to that of bamboo and wood as well as that it has much carbon and nitrogen and faster decomposition speed.
Plant starch is mainly obtained from a variety of natural plants, including sweet potatoes, corn, potatoes and wheat, all of which grow rapidly and continuously. Raw materials that can be used to produce polylactic acid can be obtained after fermentation, dehydration and purification of starch from these plants. While polylactic acid, with good processing properties, can be resolved rapidly through various ways after products are abandoned, thus it is a green plastic with good applicability.