A Review of Fundamental and Engineering Aspects of Extrusion of Biopolymers in a Single‐screw Extruder

Bruin, S.; Zuilichem, D.J. van; Stolp, W.

doi:10.1111/j.1745-4530.1978.tb00193.x

Cited by 95 publications

(48 citation statements)

References 14 publications

(13 reference statements)

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“…The pumping efficiency of the extruder is the ratio of the energy used for pumping the material and the total energy input into the extruder [1,2,7,9].…”

Section: Basic Analysismentioning

confidence: 99%

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Scale‐Up of Extrusion‐Cooking in Single‐Screw Extruders

Janssen

Mościcki

2011

Extrusion‐Cooking Techniques

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“…The pumping efficiency of the extruder is the ratio of the energy used for pumping the material and the total energy input into the extruder [1,2,7,9].…”

Section: Basic Analysismentioning

confidence: 99%

“…The degree to which the process is adiabatic can be estimated from the Brinkmann number, that can be rewritten for extruders as [2,12]:…”

Section: Introductionmentioning

confidence: 99%

Scale‐Up of Extrusion‐Cooking in Single‐Screw Extruders

Janssen

Mościcki

2011

Extrusion‐Cooking Techniques

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“…3 ) emphasized the importance of chemical reactions which occurred during ext To whom correspondence should be addressed.…”

mentioning

confidence: 99%

Kinetic Analysis of Soy-protein Denaturation by a Temperature-programmed Heat-denaturation Technique

Yoshii

Furuta

Noma

et al. 1990

Agricultural and Biological Chemistry

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“…The extrusion of starch in the food industry has been practiced since 1935 [220]. It is from the perspective of this industry that nearly all of starch extrusion literature, is written.…”

Section: Starch Extrusionmentioning

confidence: 99%

“…The starch conversion associated with mechanical disruption can be attributed to many extrusion parameters and their interrelationships [220,[228][229][230][231]. Bruin et al [220] reviewed the fundamental influences of extruder design and screw speed on flow patterns, flow rates, residence time distributions and power consumption.…”

Section: Starch Extrusionmentioning

confidence: 99%

A conceptual model of a sustainable system based upon observations of biodegradable plastic packaging film experiments and material flow

Fletcher¹

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One can imagine full knowledge of a system allows for optimal decision making when problems arising within that system need to be solved. In reality, solutions involving any non-trivial system must be pursued with incomplete knowledge. In light of the complexity and diversity of current industrial economic systems and the decision-making processes pertaining to them, integrating streams of knowledge would improve problem solving outcomes on such scales. More specifically, it could potentially address how to compare the rate of problem proliferation to solution implementation within a system. However, successfully integrating knowledge of diverse systems towards a common purpose requires careful and consistent analogies to be constructed between the entities of those systems. The current work investigates the merits of such an approach for resolving sustainable development issues. The hypothesis is that knowledge of what influences the flow and transformation of matter, (that is, what influences a common phenomenon throughout life-supporting systems), can facilitate this integration. The problem of accumulating material waste is used as a vehicle to focus the discussion.To this end, the foundation of the work is an experimental study into the development of a starch based biodegradable plastic packaging film. The two main constraints on sample production were to minimise cost and maximise biodegradability. Slit die rheological data is gathered for five samples selected from polymer extrusion trials as part of describing their viscous behaviours via a semi-empirical model incorporating die temperature (measured at 120, 140 and 160°C) and shear rate (altered by screw speeds of 5-50 rpm).The samples differ in additive content and extrusion passes from a baseline starch/water/glycerol (~73/18/9.0 wt% total) combination extruded once to the addition of cross-linking agents and surface modifiers (<1 wt% total) extruded twice. GPC, DSC, tensile strength and moisture absorption analyses join the rheological data to explain The experimental study represents a typical analytical approach to developing a technical solution. Yet while technology will remain indispensable to problem solving, there is a iii need to realise that splintering knowledge into disciplines of the ever finer detail required to extend technical accomplishment, must also be complemented by a synthesis of associated facts and relevant theories to address more encompassing problems associated with sustainability of the modern industrial economy. Therefore, considering the relative success of modelling the viscous behaviour of the starch based plastic samples, it was proposed to extend the concepts of rheology used to explain the flow of matter on the molecular scale to the flow of matter on the scale of the industrial economy.To whatever extent possible, the advantages of being able to predict how such flows respond to industrial economic decisions would contribute to the research of sustainable systems.The assumption is made here that an apt mate...

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A Review of Fundamental and Engineering Aspects of Extrusion of Biopolymers in a Single‐screw Extruder

Cited by 95 publications

References 14 publications

Scale‐Up of Extrusion‐Cooking in Single‐Screw Extruders

Scale‐Up of Extrusion‐Cooking in Single‐Screw Extruders

Kinetic Analysis of Soy-protein Denaturation by a Temperature-programmed Heat-denaturation Technique

A conceptual model of a sustainable system based upon observations of biodegradable plastic packaging film experiments and material flow

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