scholarly journals Sustainable Reactive Polyurethane Hot Melt Adhesives Based on Vegetable Polyols for Footwear Industry

Polymers ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 284
Author(s):  
Maria Pilar Carbonell Blasco ◽  
María Ángeles Pérez Limiñana ◽  
Carlos Ruzafa Silvestre ◽  
Elena Orgilés Calpena ◽  
Francisca Arán Aís
Keyword(s):  
Renewable Resources ◽  
Softening Temperature ◽  
Scanning Calorimetry ◽  
Adhesion Properties ◽  
Quality Requirements ◽  
Footwear Industry ◽  
Polyurethane Adhesives ◽  
Peel Tests ◽  
Melt Adhesives ◽  
Hot Melt

The aim of this work is to develop sustainable reactive polyurethane hot melt adhesives (HMPUR) for footwear applications based on biobased polyols as renewable resources, where ma-croglycol mixtures of polyadipate of 1,4-butanediol, polypropylene and different biobased polyols were employed and further reacted with 4-4′-diphenylmethane diisocyanate. The different reactive polyurethane hot melt adhesives obtained were characterized with different experimental techniques, such as Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), softening temperature and melting viscosity. Finally, their adhesion properties were measured from T-peel tests on leather/HMPUR adhesives/SBR rubber joints in order to establish the viability of the used biobased polyols and the amount of these polyols that could be added to reactive polyurethane hot melt adhesives satisfactorily to meet the quality requirements of footwear joints. All biobased polyols and percentages added to the polyurethane adhesive formulations successfully met the quality requirements of footwear, being comparable to traditional adhesives currently used in footwear joints in terms of final strength. Therefore, these new sustainable polyurethane adhesives can be considered as suitable and sustainable alternatives to the adhesives commonly used in footwear joints.

scholarly journals Influence of biobased polyol type on the properties of polyurethane hotmelt adhesives for footwear joints

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
M. P. Carbonell-Blasco ◽  
M. A. Pérez-Limiñana ◽  
C. Ruzafa-Silvestre ◽  
F. Arán-Ais ◽  
E. Orgilés-Calpena
Keyword(s):  
Raw Materials ◽  
Peel Test ◽  
Softening Temperature ◽  
Peel Strength ◽  
Adhesion Test ◽  
Scanning Calorimetry ◽  
Final Performance ◽  
Footwear Industry ◽  
Polyurethane Adhesives ◽  
Useful Life

AbstractPolyurethanes, one of the most used polymers worldwide, are strongly dependent of non-renewable fossil resources. Thus, boosting the production of new polyurethanes based on more sustainable raw materials is crucial to move towards the footwear industry decarbonisation. The aim of this study is to synthesise and characterise reactive hotmelt polyurethanes from biomass and CO2-based polyols as bioadhesives for the footwear industry. The influence of biobased polyols on the polyurethane structure, and therefore, on their final properties was analysed by different experimental techniques such us Fourier transform infrared spectroscopy (FTIR), Differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA), Melting viscosity, Softening temperature and T-peel strength test, in order to assess their viability for the upper to sole bonding process. The results obtained indicated that the incorporation of different amounts of the biobased polyols produces changes in the structure and final performance of the polyurethanes. Therefore, adhesion test carried out by the T-peel test 72 h after the upper -to- sole bonding of the sustainable adhesives show high final adhesion values. These sustainable raw materials provide polyurethane adhesives with additional beneficial non-toxicity and sustainable characteristics, without harming their properties during their useful life.

Novel polyurethane reactive hot melt adhesives based on polycarbonate polyols derived from CO 2 for the footwear industry

2016 ◽  
Vol 70 ◽  
pp. 218-224 ◽  
Author(s):  
Elena Orgilés-Calpena ◽  
Francisca Arán-Aís ◽  
Ana M. Torró-Palau ◽  
César Orgilés-Barceló
Keyword(s):  
Footwear Industry ◽  
Melt Adhesives ◽  
Hot Melt

Sustainable adhesives and adhesion processes for the footwear industry

2020 ◽  
pp. 095440622095770
Author(s):  
F Arán-Ais ◽  
C Ruzafa-Silvestre ◽  
MP Carbonell-Blasco ◽  
MA Pérez-Limiñana ◽  
E Orgilés-Calpena
Keyword(s):  
Polymeric Materials ◽  
Environmental Footprint ◽  
Hazardous Chemicals ◽  
Footwear Industry ◽  
Plasma Surface Treatment ◽  
Volatile Organic ◽  
Recent Developments ◽  
Materials Used ◽  
Melt Adhesives ◽  
Hot Melt

The key to sustainable development in the footwear industry through the principles of circular economy lies in taking care of the design, as well as the introduction of innovative and more resource efficient materials and processes to reduce or avoid the use of water, energy, hazardous chemicals and to minimise emissions and waste. In fact, the environmental footprint is already being considered as another requirement of the footwear through eco-design. In this sense, previous studies carried out by INESCOP regarding its environmental impact in terms of carbon footprint showed that 15% of it corresponds to the assembly processes, mainly by adhesive joints, due to their content on organic solvents, hazardous chemicals and polymers from fossil origin. Therefore, this paper focuses on recent developments carried out by INESCOP on more sustainable adhesives and adhesion processes for the upper-to-sole assembly in the footwear manufacturing process, through different approaches. Firstly, bio-based reactive polyurethane hot melt adhesives have been synthesised using polyols from different renewable sources. Secondly, the use of the low-pressure plasma surface treatment to improve the adhesion of polymeric materials used as soling materials was assessed in order to reduce volatile organic compounds emissions, as well as the use of hazardous chemicals for total automation of the bonding process.

Viscoelastic and adhesion properties of EVA/tackifier/wax ternary blend systems as hot-melt adhesives

2006 ◽  
Vol 20 (14) ◽  
pp. 1561-1571 ◽  
Author(s):  
Young-Jun Park ◽  
Hyo-Sook Joo ◽  
Hyun-Sung Do ◽  
Hyun-Joong Kim
Keyword(s):  
Ternary Blend ◽  
Adhesion Properties ◽  
Melt Adhesives ◽  
Hot Melt

Hot-Melt Adhesives from Renewable Resources: A Critical Review

2016 ◽  
Vol 4 (1) ◽  
pp. 104-118 ◽  
Author(s):  
P. Utekar ◽  
H. Gabale ◽  
A. Khandelwal ◽  
S.T. Mhaske
Keyword(s):  
Renewable Resources ◽  
Critical Review ◽  
Melt Adhesives ◽  
Hot Melt

scholarly journals Characterization a polyurethane-based reactive hot melt adhesive for applications in materials

DYNA ◽  
2019 ◽  
Vol 86 (210) ◽  
pp. 247-253
Author(s):  
JOSE LUDDEY MARULANDA AREVALO ◽  
Miguel Angel Martinez Casanova ◽  
JUANA ABEJONAR BUENDIA ◽  
ANTONIO PIQUERAS PEREZ
Keyword(s):  
Contact Angles ◽  
Tensile Shear ◽  
Shore Hardness ◽  
Shear Tests ◽  
Scanning Calorimetry ◽  
Hardness Tests ◽  
The Matrix ◽  
Melt Adhesives ◽  
High Processing ◽  
Hot Melt

In the present study, we used tensile shear tests, Shore hardness tests, differential scanning calorimetry (DSC), and thermogravimetry (TGA) to characterize a reactive polyurethane-based hot melt adhesive. We also measured contact angles at various temperatures to evaluate the wettability of the adhesive and to determine the optimum temperature range for applications. The adhesive was tested following curing for various times, and the bonding of the adhesive with several materials was investigated to determine whether it has the potential for greater versatility of application. Therefore, we explored new uses of the adhesive, such as in the matrix of a composite with fiberglass. Reactive hot melt adhesives are useful because they provide a certain degree of flexibility to joints, and have high processing speeds, high initial rigidity, and high working temperatures.

Hot-Melt Adhesives from Renewable Resources

2017 ◽  
pp. 101-114
Author(s):  
P. Utekar ◽  
H. Gabale ◽  
A. Khandelwal ◽  
S.T. Mhaske
Keyword(s):  
Renewable Resources ◽  
Melt Adhesives ◽  
Hot Melt
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