1
|
Wang S, Li Y, Zhang J, Man J, Nie Y, Ji M, Chen H, Li F, Zhang C. Treatment and mechanism for hot melting starch by reducing the molecular chain winding and crystallinity. Carbohydr Polym 2024; 325:121574. [PMID: 38008485 DOI: 10.1016/j.carbpol.2023.121574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 09/29/2023] [Accepted: 11/06/2023] [Indexed: 11/28/2023]
Abstract
Unlike thermoplastic petroleum-based materials, starch-based materials rely on aqueous systems but are incapable of hot melting, resulting in low processing efficiency and limited large-scale industrial applications. In this study, the combination of α-amylase liquefaction and urea plasticization was used for the first time to obtain enzymatic thermoplastic starch (ETPS) for hot melting by changing the molecular chain of starch. ETPS showed an apparent hot melting phenomenon when heated below 200 °C. Differential scanning calorimetry revealed that heat absorption peaks were obviously reduced, and the hot melting phenomenon occurred easily depending on the combination of enzymatic hydrolysis and plasticization. Dynamic mechanical analysis indicated that the combined modification effectively increased the number of freely movable chains. The red shift of -OH stretching vibration peaks indicated the formation of strengthened hydrogen bonds in ETPS. X-ray diffraction showed that the crystallinity of ETPS was reduced to 5.68 %, effectively reducing the regenerative phenomenon. Gel permeation chromatography revealed that the molecular weight of ETPS decreased, and the entanglements between molecular chains were reduced. A tensile test showed that the elongation at break of ETPS was as high as 235.29 %, which was much higher than those of enzymatic hydrolysis starch and thermoplastic starch.
Collapse
Affiliation(s)
- Shen Wang
- College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China
| | - Yanhui Li
- College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China
| | - Jingxian Zhang
- College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China
| | - Jia Man
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (M of E), School of Mechanical Engineering, Shandong University, Jinan 250061, China
| | - Yanyan Nie
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (M of E), School of Mechanical Engineering, Shandong University, Jinan 250061, China
| | - Maocheng Ji
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (M of E), School of Mechanical Engineering, Shandong University, Jinan 250061, China
| | - Heyu Chen
- College of Mechanical and Electronic Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shanxi 712100, China
| | - Fangyi Li
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture (M of E), School of Mechanical Engineering, Shandong University, Jinan 250061, China
| | - Chuanwei Zhang
- College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China.
| |
Collapse
|
2
|
Starch plasticization with choline dihydrogencitrate-based deep eutectic system. POLISH JOURNAL OF CHEMICAL TECHNOLOGY 2022. [DOI: 10.2478/pjct-2022-0022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Abstract
Two-component deep eutectic solvents (DES) based on choline dihydrogencitrate and glycerol or urea were tested as starch plasticizers. Thermal analysis techniques were applied to characterize the properties of starch/DES systems. The X-ray diffractometry measurements revealed a significant decrease in crystallinity indicating that used DES exhibited the ability to penetrate the ordered regions of potato starch, which is a necessary feature of a true plasticizer. However, the differential scanning calorimetry and dynamic thermal analysis results surprisingly showed an increase of Tg of starch materials indicating chemical crosslinking at elevated temperature. The eutectic solvents based on choline dihydrogencitrate could act as a plasticizer and a simultaneously crosslinking agent.
Collapse
|
3
|
Mansoori E, Behzad T, Shafieizadegan‐Esfahani AR. Preparation and characterization of corn starch/soy protein biocomposite film reinforced with graphene and graphene oxide nanoplatelets. POLYM ADVAN TECHNOL 2019. [DOI: 10.1002/pat.4657] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Elham Mansoori
- Department of Polymer EngineeringIsfahan University of Technology Isfahan 84156‐83111 Iran
| | - Tayebeh Behzad
- Department of Chemical EngineeringIsfahan University of Technology Isfahan 84156‐83111 Iran
| | | |
Collapse
|
4
|
Hoyos-Leyva J, Bello-Pérez L, Agama-Acevedo E, Alvarez-Ramirez J. Potential of taro starch spherical aggregates as wall material for spray drying microencapsulation: Functional, physical and thermal properties. Int J Biol Macromol 2018; 120:237-244. [DOI: 10.1016/j.ijbiomac.2018.08.093] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 07/02/2018] [Accepted: 08/19/2018] [Indexed: 11/15/2022]
|
5
|
Green Development of Biodegradable Films Based on Native Yam (Dioscoreaceae) Starch Mixtures. STARCH-STARKE 2018. [DOI: 10.1002/star.201700234] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
6
|
|
7
|
Yu L, Liu X, Petinakis E, Dean K, Bateman S. Starch Based Blends, Composites and Nanocomposites. ADVANCES IN NATURAL POLYMERS 2013. [DOI: 10.1007/978-3-642-20940-6_4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
8
|
Zhang Y, Fan B, Zhang P, Leng Y, Zhu M, Wu Q. Thermoplastic starches modified with polyurethane microparticles: The effects of isocyanate types in polyurethane. STARCH-STARKE 2011. [DOI: 10.1002/star.201100043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|