Process of Making and Separation

Oct 13, 2025 by pynkocean.com 100 views

Manufacture of Biodegradable Composites from α-Cellulose Cane BZ 132 (Saccharum officinarum) and Polypropylene by Using Polypropylene Rolled Maleic Anhydride and Divinil Benzene as a Cross-Binding Agent

Introduction

The increasing concern about environmental pollution and the need for sustainable materials have led to the development of biodegradable composites. One of the promising materials for this purpose is α-cellulose from sugarcane, which can be combined with polypropylene to create a biodegradable composite. In this study, we investigated the manufacture of biodegradable composites from α-cellulose sugarcane and polypropylene using polypropylene rolled maleic anhydride and divinil benzene as a cross-binding agent.

Process of Making and Separation

The first stage of the manufacturing process involves the degradation of polypropylene using benzoyl peroxide (BPO) in an internal mixer with a ratio of 90:10 (wt%). This degraded polypropylene is then grafted with maleic anhydride (MA) with a polypropylene (PP): MA: BPO ratio of 92:6:2 (wt%). The grafting results are then purified through reflux with xylene. This process is crucial in creating a cross-linking agent that will bind the α-cellulose and polypropylene together.

In the second stage, α-cellulose is isolated from sugarcane pulp using the Okhamafe method. This separation process involves immersing sugarcane pulp in a 3.5% nitric acid solution, followed by bleaching using sodium hypochlorite 1.75% and 17.5%, and purification with sodium hydroxide (NaOH). This process is essential in obtaining high-quality α-cellulose that can be used to create a biodegradable composite.

Mixing and Characterization

The last stage of the manufacturing process involves mixing α-cellulose with polypropylene and the cross-binding agent. This process is carried out using the press press method at 160°C. The composition variations produced include PP: α-cellulose (95:5), PP: α-cellulose: PP-G-MA (95:5:1), and several other variations. The resulting composite is then characterized using various methods, including functional group analysis using FTIR, morphological analysis with SEM, and analysis of mechanical properties through tensile tests. Thermal properties are analyzed with DTA, while water resistance is tested through the measurement of water absorption. The ability of biodegradity is tested to find out the extent to which this composite can be decomposed in the environment.

RESULTS AND DISCUSSION

The results showed that the composite with a composition of PP: α-cellulose: PP-G-MA: BPO: DVB (95:5:0.5:0.5:1:1) has the best properties, according to SNI 7188.7:2011. The composite has a tensile strength value of 50.031 N/m² and low water absorption, which is 0.791%. In addition, the morphological characteristics show a flat surface and strong interactions between groups, and have good biodegradity capabilities.

This study underlines the potential for the use of sugarcane pulp as a source of α-cellulose in the manufacture of environmentally friendly composites. With the right combination of technology, it is expected that this composite can replace plastic-based materials that are difficult to decompose, in line with the need to reduce plastic waste in our environment. In addition, the use of materials sourced from nature such as sugarcane pulp not only provides ecological benefits but also increases added value to the agricultural industry.

Conclusion

In conclusion, this study has demonstrated the feasibility of manufacturing biodegradable composites from α-cellulose sugarcane and polypropylene using polypropylene rolled maleic anhydride and divinil benzene as a cross-binding agent. The results showed that the composite with a composition of PP: α-cellulose: PP-G-MA: BPO: DVB (95:5:0.5:0.5:1:1) has the best properties, according to SNI 7188.7:2011. This study highlights the potential for the use of sugarcane pulp as a source of α-cellulose in the manufacture of environmentally friendly composites, and provides a new direction for the development of sustainable materials.

Recommendations

Based on the results of this study, the following recommendations are made:

Further research is needed to optimize the manufacturing process and to improve the properties of the biodegradable composite.
The use of sugarcane pulp as a source of α-cellulose should be explored further, and the potential for large-scale production should be investigated.
The biodegradable composite should be tested for its performance in various applications, such as packaging, construction, and automotive industries.
The economic feasibility of the manufacturing process should be evaluated, and the potential for cost savings should be explored.

Future Work

Future work should focus on the following areas:

Optimization of the manufacturing process to improve the properties of the biodegradable composite.
Investigation of the potential for large-scale production of the biodegradable composite.
Testing of the biodegradable composite in various applications.
Evaluation of the economic feasibility of the manufacturing process.

By addressing these areas, it is expected that the biodegradable composite can be developed into a commercially viable product that can replace plastic-based materials and contribute to a more sustainable future.
Frequently Asked Questions (FAQs) about Biodegradable Composites from α-Cellulose Cane BZ 132 (Saccharum officinarum) and Polypropylene

Q: What is α-cellulose and why is it used in biodegradable composites?

A: α-Cellulose is a type of cellulose that is found in plant cell walls. It is a long-chain polymer of glucose molecules that is highly crystalline and has a high degree of polymerization. α-Cellulose is used in biodegradable composites because it is biodegradable, non-toxic, and has a high strength-to-weight ratio.

Q: What is the role of polypropylene in biodegradable composites?

A: Polypropylene is a type of thermoplastic polymer that is commonly used in packaging, automotive, and construction applications. In biodegradable composites, polypropylene serves as a matrix material that provides strength, stiffness, and toughness to the composite.

Q: What is the purpose of using a cross-binding agent in biodegradable composites?

A: A cross-binding agent is used to bind the α-cellulose and polypropylene fibers together, creating a strong and durable composite material. The cross-binding agent helps to improve the mechanical properties of the composite, such as tensile strength and impact resistance.

Q: What are the benefits of using biodegradable composites made from α-cellulose and polypropylene?

A: Biodegradable composites made from α-cellulose and polypropylene have several benefits, including:

Biodegradability: These composites can be easily decomposed by microorganisms, reducing the amount of plastic waste in landfills and oceans.
Non-toxicity: α-Cellulose and polypropylene are non-toxic and safe for use in food packaging and other applications.
High strength-to-weight ratio: Biodegradable composites made from α-cellulose and polypropylene have a high strength-to-weight ratio, making them suitable for use in a wide range of applications.
Renewable resource: α-Cellulose is a renewable resource that can be sourced from sugarcane and other plant materials.

Q: How are biodegradable composites made from α-cellulose and polypropylene manufactured?

A: Biodegradable composites made from α-cellulose and polypropylene are manufactured using a combination of mechanical and chemical processes. The α-cellulose is first isolated from sugarcane or other plant materials, and then mixed with polypropylene and a cross-binding agent. The mixture is then processed using a variety of techniques, including extrusion, injection molding, and compression molding.

Q: What are the potential applications of biodegradable composites made from α-cellulose and polypropylene?

A: Biodegradable composites made from α-cellulose and polypropylene have a wide range of potential applications, including:

Packaging: Biodegradable composites can be used to make packaging materials, such as containers, cups, and cutlery.
Automotive: Biodegradable composites can be used to make automotive parts, such as dashboards, door panels, and interior trim.
Construction: Biodegradable composites can be used to make building materials, such as insulation, roofing, and flooring.
Medical: Biodegradable composites can be used to make medical devices, such as implants, surgical instruments, and wound dressings.

Q: What are the challenges associated with the production of biodegradable composites made from α-cellulose and polypropylene?

A: The production of biodegradable composites made from α-cellulose and polypropylene is still in its early stages, and there are several challenges associated with its production, including:

High cost: The production of biodegradable composites is still relatively expensive compared to traditional plastics.
Limited availability of raw materials: α-Cellulose is a renewable resource, but its availability is still limited in some regions.
Complexity of manufacturing process: The manufacturing process for biodegradable composites is complex and requires specialized equipment and expertise.

Q: What is the future outlook for biodegradable composites made from α-cellulose and polypropylene?

A: The future outlook for biodegradable composites made from α-cellulose and polypropylene is promising, with several factors contributing to its growth, including:

Increasing demand for sustainable materials: There is a growing demand for sustainable materials that are biodegradable and non-toxic.
Advancements in technology: Advances in technology are making it possible to produce biodegradable composites at a lower cost and with improved properties.
Government regulations: Governments are implementing regulations to reduce plastic waste and promote the use of biodegradable materials.