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The nanocellulose whiskers degraded by coconut shell were modified by silane coupling agent (KH-570). The structure, morphology and dispersibility of modified nanocellulose whiskers were characterized and analyzed by infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscope (TEM) and sedimentation. The results showed that the modified nanocellulose whiskers have been changed from hydrophilic to hydrophobic, and could be dispersed uniformly in ethanol without agglomeration because silane coupling agent reacts with hydroxyl groups on the surface of nanocellulose whiskers. The study showed that the crystallinity of nanocellulose whiskers were decreased with the increase of the content of coupling agent. Experiment also indicated that both of dispersibility and crystallinity could reached optimism when the amount of coupling agent is 2%. Finally, the mechanism of chemical reaction of coupling agent modified nanocellulose whisker in coconut huskwas estabilished by comparison of molecular structure of KH-570, modification process and the infrared spectrum of nanocellulose whiskers.

Agricultural development is a necessary component of national development efforts to fight food crises and promote poverty reduction in many developing countries. However, many developing countries have fallen into a stalemate between modernization and development—modernized areas are less capable of driving regional development despite their abundant land and rich population. Striking a balance between agricultural technology and environmental protection is a key feature of sustainable land development. Based on the social–ecological resilience theory, this study takes Cambodia as an example and aims to establish a comprehensive evaluation index system to measure the agricultural production, regional road construction, and agricultural eco-environment in Cambodia. The coupled coordination model and gray relation analysis model are utilized to explore the interaction between agriculture, roads, and the agricultural eco-environment. The results show that (1) Cambodia has road environmental risks, and there is a need for rural labor migration in areas with higher levels of economic development. (2) The main agricultural production areas are faced with the dilemma of lagging infrastructure development, such as roads, and a huge potential for agricultural development. (3) In the plains areas, the growing population has caused tension between food security, fertilizer abuse, and deforestation, which intensified the disturbance of the agricultural ecological environment. In summary, based on their own developmental needs, developing countries at different stages of development can explore the interaction between agricultural production, infrastructure development, and the agricultural eco-environment in the process of agricultural development. This study attempts to provide a set of practical development policy implications for developing countries that are seeking to enhance the coupling relationship between agricultural production, infrastructure, and the agricultural eco-environment.

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