Preparation of cellulose nanofibers from beet pulp: Study on the effect of acetic anhydride and ammonium persulfate pretreatment

Research Overview

According to the study published in Volume 253, Part 1 of Industrial Crops and Products (November 2026), authors Ramin Ghorbani and Rabi Behrooz prepared cellulose nanofibers from beet pulp using high-speed blending method, and systematically investigated the effects of acetic anhydride pretreatment and ammonium persulfate pretreatment on the preparation process and obtained nanofibers. This study belongs to the direction of high-value utilization of agricultural by-products and is directly related to the bio based agricultural polymer sources of concern in the field of agricultural materials.

Raw material route and process points

Beet meal is a major by-product of the sugar industry, rich in cellulose components, and has the potential to be used as a raw material for bio based nanomaterials.

. The study adopts high-speed blending as a means of nanofiber dissociation, which belongs to the mechanical route; Before blending, two chemical pretreatments, acetic anhydride and ammonium persulfate, were introduced to compare the differences in the effect of different pretreatments on fiber dissociation. From the perspective of process logic, the function of pretreatment is to weaken the bonding between fibers, reduce the energy consumption and difficulty of subsequent mechanical dissociation, while high-speed blending provides the shear action required for dissociation. The study combines chemical pretreatment with mechanical dissociation, reflecting the common “chemical mechanical” synergistic approach in the preparation of bio based nanofibers.

Significance for the field of agricultural materials

Cellulose nanofibers have multiple potential uses in agricultural materials: they can be used as reinforcing components for biobased and biodegradable agricultural polymers, as well as for the structural construction of controlled release and coating materials, or as biobased fillers in agricultural film formulations for system design.

. Using non grain by-products such as sweet rapeseed meal as raw materials can help reduce the cost pressure of bio based materials and align with the direction of agricultural waste resource utilization. From the application requirements of agricultural film and greenhouse film, if bio based nanofibers enter the agricultural film system, their dispersion state and interface compatibility will directly affect the mechanical and optical properties of the film. This type of biobased filler usually needs to be used in combination with weather resistant masterbatch, light stabilizers, antioxidants, and HALS additives in actual agricultural film formulations to balance processing stability and service life under outdoor exposure conditions. This study focuses on the preparation and pretreatment comparison of nanofibers, and has not yet involved the formulation and weather resistance evaluation of agricultural films. However, the bio based nanofiber raw material route provided by it can provide reference at the raw material and process levels for subsequent application research in agricultural films, coating materials, and other scenarios.

Key Points to Pay Attention

This study is a journal article that focuses on the influence of pretreatment methods on the preparation of sugar beet pulp based cellulose nanofibers. It is a fundamental work at the level of raw materials and processes.

. The combination of it with specific additive systems such as agricultural film, weather resistant masterbatch, light stabilizer, antioxidant, HALS, etc. still requires further verification for dispersibility, compatibility, and aging performance. Readers should pay attention to distinguishing the differences between preparation research and formulation application research when citing.

Information source:Valorization of sugar beet pulp into cellulose nanofibers using high-speed blending: Effects of acetic anhydride and ammonium persulfate pretreatments， Organized by Herun Chemical.