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Qaagi - Book of Why

Causes

Effects

oxidation and environmental influences like acidic soils or alkalinity ( concrete).DELTA(passive) caused bypolymer degradation

the high temperature during the processcausesdegradation of the polymer

shear and high temperatures(passive) caused bypolymer degradation

the polymer ... a very high temperaturescan causedegradation of the polymer

sufficiently high temperaturescausepolymer degradation

high temperatures ... undesirableto preventpolymer degradation [ 17

oxidation and environmental influences like acidic soils or alkalinity ( concrete ) , which all - recycle based products(passive) caused bypolymer degradation

due account of the possible oxidation reactionscould leadto a polymer degradation

1 : use phenolic and/or phosphorous antioxidantsto preventdegradation of the polymer

when the temperature is too highresultsdeterioration of the polymer

Residence time at high temperaturescausespolymer degradation

the harmful UV radiationcausesdegradation of the polymer

the black ... the UV radiationcausespolymer degradation

Such high temperature hydrogenation conditioncan resultin polymer degradation

oxidation and environmental influences like acidic soils or alkalinity ( concrete ) Available in 6 ' and 8 ' wide rolls , DELTA(passive) caused bypolymer degradation

Anti - oxidants are normally addedto preventpolymer degradation

| polymers FactorsContributingto Polymer Degradation

the various factorsinfluencingthe polymer degradation

photo - oxidation or thermal exposure(passive) caused bypolymer degradation

the radicals resulting in crosslinking and oxidationresultingin polymer degradation

lo specific additives or antioxidantspreventpolymer degradation

Excessive heating of the polymer materialcausesdegradation of the polymer

hydroperoxide during processing(passive) caused bypolymer degradation

processing heat(passive) caused bypolymer degradation

Increasing temperaturecausespolymer degradation

its temperature ... a valuecausespolymer degradation

Antioxidants Antioxidants are frequently added to thermoplastics compositionsto preventpolymer degradation

Likewise , polyaromatic stabilizers may be addedto preventpolymer degradation

atmospheric moisture ... under normal processing conditionscan causedegradation of the polymer

Excessive incubation at a high temperature and pH should be avoidedmay causepolymer degradation

the tendency of these conditionsto causepolymer degradation

Exposure of the polyphenylene ether to the high temperatures of conventional dryingmay causedegradation of the polymer

the temperature ... low enoughto preventdegradation of the polymer

UV radiation ( which can cause a loss of viscosity(passive) caused bypolymer degradation

pot life problemsresultingfrom polymer degradation

propylene glycol Anti - oxidants & other processing aids : The excessive temperatures needed to process unplasticized or under plasticized polymersmay leadto polymer degradation

the polymeric material being subjected to the relatively high temperatures ( and pressures ) during the extrusion process(passive) was caused bypolymer degradation

extrusion temperature , moisture and the time the resin is held in the melt(passive) caused bypolymer degradation

such high concentrationsmay causepolymer degradation

An antioxidant ( N - phenyl-2-naphthylamine ) was added to all high temperature GPC samplesto preventpolymer deterioration

low pressure steam turbine blades N. Failure of automobile seat belts(passive) caused bylow pressure steam turbine blades N. Failure of automobile seat belts

to the creation of a polymer concentration gradient in the electrode filmcontributesto the creation of a polymer concentration gradient in the electrode film

in films possessing poor tensile properties , especially ultimate tensile strengthresultingin films possessing poor tensile properties , especially ultimate tensile strength

The Adjuvant Effect of Gantrez ® AN Nanoparticles on Oral Vaccination of Pigs and Mice with F4 Fimbriae(passive) Is Strongly Influenced byThe Adjuvant Effect of Gantrez ® AN Nanoparticles on Oral Vaccination of Pigs and Mice with F4 Fimbriae

to a reduction in viscosityleadingto a reduction in viscosity

to change in appearance such as discoloration and loss of mechanical properties such as strength and flexibilitycan leadto change in appearance such as discoloration and loss of mechanical properties such as strength and flexibility

the fluid to become less viscous , allowing the “ broken ” fluid to be produced from the subterranean formation to the well surfacecausingthe fluid to become less viscous , allowing the “ broken ” fluid to be produced from the subterranean formation to the well surface

the fracturing fluid to become less viscous , whereby the fracturing fluid can be pumped from the subterranean formation to the well surfacecausingthe fracturing fluid to become less viscous , whereby the fracturing fluid can be pumped from the subterranean formation to the well surface

to drug release followed by diffusionwas contributedto drug release followed by diffusion

to backsheet cracking , which can represent a safety hazard for anyone conducting operations or maintenance procedurescan leadto backsheet cracking , which can represent a safety hazard for anyone conducting operations or maintenance procedures

significantly to the rate of drug release observed during the 4 weeks of release ... since 50:50 PLGA typically degrades after 1 to 2 months and 65:35 PLGA after 3 to 4 monthscontributedsignificantly to the rate of drug release observed during the 4 weeks of release ... since 50:50 PLGA typically degrades after 1 to 2 months and 65:35 PLGA after 3 to 4 months

in deterioration of their chemical , physical and mechanical propertiesresultsin deterioration of their chemical , physical and mechanical properties

in loss of strength , flexibility , thermal stability , and colorcan resultin loss of strength , flexibility , thermal stability , and color

transported by a curriculumcausedtransported by a curriculum

alterations of physical and chemical features of implantable devices.[fifty threecan causealterations of physical and chemical features of implantable devices.[fifty three

in the formation of polymeric particles , which may lessen the properties of fiber webs used for filter media or other applicationsmay resultin the formation of polymeric particles , which may lessen the properties of fiber webs used for filter media or other applications

in formation of acid degradation products that locally decreases the pH , and can cause denaturation of the proteinresultsin formation of acid degradation products that locally decreases the pH , and can cause denaturation of the protein

to the physical erosion of the polymeric matrixleadsto the physical erosion of the polymeric matrix

into oligomers , dimers and monomers and finally to CO2 and H2O.resultsinto oligomers , dimers and monomers and finally to CO2 and H2O.

to the physic al erosion of the polymeric matrixleadsto the physic al erosion of the polymeric matrix

to the underestimation of molecular weightsleadingto the underestimation of molecular weights

in discoloration , gas bubbles and carbon formationresultingin discoloration , gas bubbles and carbon formation

changes incrystallinity , an increase in melting temperature and theformation of crosslinkscausedchanges incrystallinity , an increase in melting temperature and theformation of crosslinks

the material dissolving(passive) caused bythe material dissolving

failure of polymer productscausesfailure of polymer products

in swelling , fo , discoloration , or delamination in the case of compositescould resultin swelling , fo , discoloration , or delamination in the case of composites

loss in color , stability , flexibility and/or strengthcan causeloss in color , stability , flexibility and/or strength

to sample embrittlementleadsto sample embrittlement

to the formation of ultra high molecular weight polymersleadingto the formation of ultra high molecular weight polymers

to a deterioration of properties even during processingleadingto a deterioration of properties even during processing

to enhanced clarity and glossleadingto enhanced clarity and gloss

generallyresultsgenerally

an open cell structure degradation(passive) caused byan open cell structure degradation

from mechanodegradation , which is caused by the application of stress such as high shear deformationcan also resultfrom mechanodegradation , which is caused by the application of stress such as high shear deformation

in gels and black spotsresultingin gels and black spots

to erosion of the material and mass loss , which can occur in the bulk or at the surface of the implanted deviceleadsto erosion of the material and mass loss , which can occur in the bulk or at the surface of the implanted device

acidic byproducts such as lactic acid , galactic acid , and/or glycolic acidmay createacidic byproducts such as lactic acid , galactic acid , and/or glycolic acid

to the foam not returning to its original shapeleadsto the foam not returning to its original shape

in faster product developmentresultingin faster product development

to deterioration of physical and mechanical properties , which affect its tribological behavior significantlyleadsto deterioration of physical and mechanical properties , which affect its tribological behavior significantly

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