479 DELIVERING SUSTAINABLE SOLUTIONS TO IMPROVE WELLBEING
Combining tara with other synthetic or natural polymers can enable synergistic behavior.
Combining tara with acrylate polymers like carbomer or acrylates/C10-30 alkyl acrylate
crosspolymers (Carbopol® Ultrez 10 and Carbopol® Ultrez 21 polymers, respectively,
commercially available from Lubrizol, Brecksville, Ohio, USA) result in strong viscosity
synergy, enable the formulation of high viscosity styling gel, and minimize the amount
of synthetic polymer. The addition of a very small concentration of acrylates/C10-30 alkyl
acrylate crosspolymers to 1 wt% tara leads to a much higher viscosity than expected if
an additive behavior was considered (Figure 28). Indeed, a mucilage containing 0.1 wt%
acrylates/C10-30 alkyl acrylate crosspolymers and 1 wt% tara reaches 25,300 mPa·s while
individual viscosities obtained are 4,150 mPa·s and 6,120 mPa·s, respectively. This synergy
may be due to the ability of tara to hydrogen-bond with the acrylate polymers.
Combining tara with diutan gum (Kelco-Care™ diutan gum, commercially available from
Lubrizol, Brecksville, Ohio, USA in partnership with CP Kelco, Atlanta, GA, USA) allows
for the formulation of a wide range of product viscosities with superior styling properties
while also maintaining smooth textures and low flaking. Indeed, diutan gum exhibits very
high humidity resistance but relatively low viscosity on its own compared to tara. Thanks to
the synergistic viscosity behavior when combining both gums, it is possible to create a styling
gel that is suitable for a tube format with a low total amount of polymers (1 wt% tara and
0.5 wt% diutan gum) and excellent hold (76% HHSCR). Alternately, 1.5 wt% tara and 0.75
wt% diutan gum may be used to obtain a gel adapted to jar packaging. The combination
of tara and diutan gum leads to translucent styling gels with touchable, humidity-resistant
hold based on natural-based polymers with a wide possible range of viscosities.
Tara also exhibits strong synergy with a quaternized cassia polymer where the synergistic
behavior is not limited to a viscosity boost, but also provides a dramatic increase in
stiffness. For example, a combination of 1 wt% tara and 1 wt% quaternized cassia leads
to a measured stiffness of 12.8N while having a viscosity of 20,000 mPa·s and a smooth
texture. This combination opens the possibilities to formulate naturally derived, extreme
Figure 28. Viscosities of 1 wt% tara, and 0.1 wt% acrylates/C10-30 alkyl acrylate crosspolymer gels used
individually or combined.
Combining tara with other synthetic or natural polymers can enable synergistic behavior.
Combining tara with acrylate polymers like carbomer or acrylates/C10-30 alkyl acrylate
crosspolymers (Carbopol® Ultrez 10 and Carbopol® Ultrez 21 polymers, respectively,
commercially available from Lubrizol, Brecksville, Ohio, USA) result in strong viscosity
synergy, enable the formulation of high viscosity styling gel, and minimize the amount
of synthetic polymer. The addition of a very small concentration of acrylates/C10-30 alkyl
acrylate crosspolymers to 1 wt% tara leads to a much higher viscosity than expected if
an additive behavior was considered (Figure 28). Indeed, a mucilage containing 0.1 wt%
acrylates/C10-30 alkyl acrylate crosspolymers and 1 wt% tara reaches 25,300 mPa·s while
individual viscosities obtained are 4,150 mPa·s and 6,120 mPa·s, respectively. This synergy
may be due to the ability of tara to hydrogen-bond with the acrylate polymers.
Combining tara with diutan gum (Kelco-Care™ diutan gum, commercially available from
Lubrizol, Brecksville, Ohio, USA in partnership with CP Kelco, Atlanta, GA, USA) allows
for the formulation of a wide range of product viscosities with superior styling properties
while also maintaining smooth textures and low flaking. Indeed, diutan gum exhibits very
high humidity resistance but relatively low viscosity on its own compared to tara. Thanks to
the synergistic viscosity behavior when combining both gums, it is possible to create a styling
gel that is suitable for a tube format with a low total amount of polymers (1 wt% tara and
0.5 wt% diutan gum) and excellent hold (76% HHSCR). Alternately, 1.5 wt% tara and 0.75
wt% diutan gum may be used to obtain a gel adapted to jar packaging. The combination
of tara and diutan gum leads to translucent styling gels with touchable, humidity-resistant
hold based on natural-based polymers with a wide possible range of viscosities.
Tara also exhibits strong synergy with a quaternized cassia polymer where the synergistic
behavior is not limited to a viscosity boost, but also provides a dramatic increase in
stiffness. For example, a combination of 1 wt% tara and 1 wt% quaternized cassia leads
to a measured stiffness of 12.8N while having a viscosity of 20,000 mPa·s and a smooth
texture. This combination opens the possibilities to formulate naturally derived, extreme
Figure 28. Viscosities of 1 wt% tara, and 0.1 wt% acrylates/C10-30 alkyl acrylate crosspolymer gels used
individually or combined.
